ADVANTA MORTGAGE LOAN TRUST 1999-2
8-K, 1999-08-10
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    Form 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


                Date of Report (Date of earliest event reported)
                                  June 3, 1999


               Advanta Mortgage Conduit Services, Inc., as Sponsor
                 on behalf of Advanta Mortgage Loan Trust 1999-2
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

          Delaware                     333-77927-02              23-2723382
          --------                     ---------                 ----------
(State or Other Jurisdiction       (Commission File           (I.R.S. Employer
      of Incorporation)                 Number)              Identification No.)


                        Advanta Conduit Receivables Inc.
                        --------------------------------
             (Exact name of registrant as specified in its charter)

           Nevada                      333-77927-02              88-0360305
           ------                      ---------                 ----------
(State or Other Jurisdiction       (Commission File           (I.R.S. Employer
      of Incorporation)                 Number)              Identification No.)

       Attention: General Counsel                                   92127
       10790 Rancho Bernardo Drive                               ----------
          San Diego, California                                  (Zip Code)
- ----------------------------------------
(Address of Principal Executive Offices)


Registrant's telephone number,
including area code                                               (858) 676-3099
- --------------------------------------------------------------------------------

             16875 West Bernardo Drive, San Diego, California 92127
- --------------------------------------------------------------------------------
          (Former name or former address, if changed since last report)


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Item 2. Acquisition or Disposition of Assets

Description of the Certificates and the Mortgage Loans

                  Advanta Mortgage Conduit Services, Inc. (the "Registrant" or
the "Sponsor") registered an issuance of $3,595,000,000 in principal amount of
Mortgage Loan Asset-Backed Certificates on a delayed or continuous basis
pursuant to Rule 415 under the Securities Act of 1933, as amended (the "Act"),
by the Registration Statement on Form S-3 (File No. 333-52351) (the "Prior
Registration Statement"). On May 6, 1999, pursuant to Section 462(b) of the Act,
the amount of securities still eligible to be sold under the Prior Registration
Statement was carried forward to a new Registration Statement (File No.
333-77927) (the "Registration Statement") and an additional amount of securities
equal to 20% of such amount ($127,500,000) was registered thereby.

                  Pursuant to the Registration Statement, the Sponsor formed
Advanta Mortgage Loan Trust 1999-2 (the "Trust") which issued approximately
$517,000,000 in aggregate principal amount of its Mortgage Loan Asset-Backed
Certificates (the "Certificates"), on June 3, 1999 (the "Closing Date").

                  This Current Report on Form 8-K is being filed to satisfy an
undertaking to file copies of certain agreements executed in connection with the
issuance of the Certificates, the forms of which were filed as Exhibits to the
Registration Statement.

                  The Certificates were issued pursuant to an Pooling and
Servicing Agreement (the "P&S Agreement") attached hereto as Exhibit 4.1, dated
as of June 1, 1999, among the Sponsor, Advanta Mortgage Corp. USA, as Master
Servicer, and Bankers Trust Company of California, N.A., as Trustee.

                  The primary assets of the Trust are pool of closed-end
mortgage loans ("Mortgage Loans"), used predominantly to refinance an existing
mortgage loan on more favorable terms, to consolidate debt or to obtain cash
proceeds by borrowing against the related borrower's equity in the real property
and improvements pledged to secure the related Mortgage Loan, secured primarily
by mortgages on single-family residences (which may be detached, part of a two-
to four-family dwelling, a condominium unit or a unit in a planned unit
development) which were conveyed to the Trust on the Closing Date. As of the
Closing Date, the Mortgage Loans had the characteristics described in the
Prospectus dated May 6, 1999, the Preliminary Prospectus Supplement dated May
21, 1999 filed pursuant to Rule 424(b)(3) of the Act with the Commission and the
Prospectus Supplement dated May 26, 1999 filed pursuant to Rule 424(b)(5) of the
Act with the Commission.

Item 7. Financial Statements, Pro Forma Financial Information and Exhibits

(a)   Not applicable

(b)   Not applicable

<PAGE>   3


(c)   Exhibits:

                  1.1 Underwriting Agreement, dated May 26, 1999, between the
Sponsor and Morgan Stanley & Co. Incorporated, as Representative of the
Underwriters.

                  4.1 Pooling and Servicing Agreement, dated May 1, 1999, among
the Sponsor, Advanta Mortgage Corp. USA, as Master Servicer, and Bankers Trust
Company of California, N.A., as Trustee.

                  4.2 Certificate Insurance Policy, dated June 3, 1999, and
issued and delivered by Ambac Assurance Corporation.

                  4.3 Conveyance Agreement, dated June 3, 1999, among Advanta
National Bank, Advanta Mortgage Corp. Midatlantic, Advanta Mortgage Corp.
Midatlantic II, Advanta Mortgage Corp. Midwest, Advanta Mortgage Corp.
Northeast, Advanta Finance Corp., Advanta Bank Corp. and Advanta Mortgage Corp.
USA (collectively, the "Affiliated Originators"), the Sponsor, Advanta Conduit
Receivables, Inc., as an Affiliate, and Bankers Trust Company of California,
N.A., as Trustee.

                  4.4 Master Loan Transfer Agreement, dated May 1, 1999, among
the Affiliated Originators, the Sponsor, Advanta Conduit Receivables, Inc. and
Bankers Trust Company of California, N.A., as Trustee.

                  5.1 Opinion of Dewey Ballantine LLP regarding legality of the
registered securities, dated as of June 3, 1999.

                  8.1 Opinion of Dewey Ballantine LLP regarding tax matters,
dated as of June 3, 1999.

                  10.1 Indemnification Agreement, dated May 26, 1999, among
Morgan Stanley & Co. Incorporated, Salomon Smith Barney, Inc. and Prudential
Securities Incorporated, as Underwriters (the "Underwriters") and Ambac
Assurance Corporation, as Certificate Insurer.

                  10.2 Guaranty, dated June 3, 1999, to Ambac Assurance
Corporation and Morgan Stanley & Co. Incorporated, as Representative of the
Underwriters, issued by Advanta Mortgage Holding Company.

                  10.3 Guaranty, dated June 3, 1999, to Ambac Assurance
Corporation and Advanta Mortgage Loan Trust 1999-2 issued by Advanta Mortgage
Holding Company.

                  23.1 Consent of KPMG Inc. regarding financial statements of
Ambac Assurance Corporation, and their report.*

                  * Previously filed on Form 8-K filed with the Securities and
Exchange Commission.



<PAGE>   4


                                   SIGNATURES


                  Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this Report to be signed on its behalf by
the undersigned thereunto duly authorized.


                                    ADVANTA MORTGAGE CONDUIT SERVICES, INC., as
                                    Sponsor on behalf of Advanta Mortgage Loan
                                    Trust 1999-2.




                                    By: /s/   Michael Coco
                                        ----------------------
                                        Name:   Michael Coco
                                        Title:  Vice President



                                    ADVANTA CONDUIT RECEIVABLES, INC.


                                    By: /s/   Michael Coco
                                        ----------------------
                                        Name:   Michael Coco
                                        Title:  Vice President




Dated:  June 16, 1999



<PAGE>   5



                                  EXHIBIT INDEX


   Exhibit No.     Description
   -----------     -----------
       1.1         Underwriting Agreement, dated May 26, 1999, between the
                   Sponsor and Morgan Stanley & Co. Incorporated, as
                   Representative of the Underwriters.

       4.1         Pooling and Servicing Agreement, dated as of May 1, 1999,
                   among the Sponsor, Advanta Mortgage Corp. USA, as Master
                   Servicer, and Bankers Trust Company of California, N.A., as
                   Trustee.

       4.2         Certificate Insurance Policy, dated June 3, 1999, and issued
                   and delivered by Ambac Assurance Corporation.

       4.3         Conveyance Agreement, dated June 3, 1999, among Advanta
                   National Bank, Advanta Mortgage Corp. Midatlantic, Advanta
                   Mortgage Corp. Midatlantic II, Advanta Mortgage Corp.
                   Midwest, Advanta Mortgage Corp. Northeast, Advanta Finance
                   Corp., Advanta Bank Corp. and Advanta Mortgage Corp. USA
                   (collectively, the "Affiliated Originators"), the Sponsor,
                   Advanta Conduit Receivables, Inc., as an Affiliate, and
                   Bankers Trust Company of California, N.A., as Trustee.

       4.4         Master Loan Transfer Agreement, dated May 1, 1999, among the
                   Affiliated Originators, the Sponsor, Advanta Conduit
                   Receivables, Inc. and Bankers Trust Company of California,
                   N.A., as Trustee.

       5.1         Opinion of Dewey Ballantine LLP regarding legality of the
                   registered securities, dated as of June 3, 1999.

       8.1         Opinion of Dewey Ballantine LLP regarding tax matters, dated
                   as of June 3, 1999.

      10.1         Indemnification Agreement, dated March 1, 1999, among Morgan
                   Stanley & Co. Incorporated, Salomon Smith Barney, Inc. and
                   Prudential Securities Incorporated, as Underwriters (the
                   "Underwriters") and Ambac Assurance Corporation, as
                   Certificate Insurer.

      10.2         Guaranty, dated June 3, 1999, to Ambac Assurance Corporation
                   and Morgan Stanley & Co. Incorporated, as Representative of
                   the Underwriters, issued by Advanta Mortgage Holding Company.

      10.3         Guaranty, dated June 3, 1999, to Ambac Assurance Corporation
                   and Advanta Mortgage Loan Trust 1999-2 issued by Advanta
                   Mortgage Holding Company.

      23.1         Consent of KPMG Inc. regarding financial statements of Ambac
                   Assurance Corporation and their report.*

                  * Previously filed on Form 8-K filed with the Securities and
Exchange Commission.






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                                                                     Exhibit 1.1


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ADVANTA MORTGAGE CONDUIT SERVICES, INC.
Mortgage Loan Asset-Backed Certificates,
Series 1999-2
UNDERWRITING AGREEMENT

                                  May 26, 1999


MORGAN STANLEY & CO. INCORPORATED
As Representative of the Underwriters (the "Representative")
named in Schedule I
1585 Broadway
New York, NY  10036

Ladies and Gentlemen:

                  Advanta Mortgage Conduit Services, Inc. (the "Company") has
authorized the issuance and sale of Mortgage Loan Asset-Backed Certificates,
Series 1999-2, consisting of (i) the Class A-1 Certificates (the "Class A-1
Certificates") , (ii) the Class A-2 Certificates (the "Class A-2 Certificates"
), (iii) the Class A-3 Certificates (the "Class A-3 Certificates"), (iv) the
Class A-4 Certificates (the "Class A-4 Certificates"), (v) the Class A-5
Certificates (the "Class A-5 Certificates"), (vi) the Class A-6 Certificates
(the "Class A-6 Certificates" and together with the Class A-1 Certificates,
Class A-2 Certificates, the Class A-3 Certificates, the Class A-4 Certificates
and the Class A-5 Certificates, the "Fixed Rate Group Certificates"), (vii) the
Class A-7 Certificates (the "Class A-7 Certificates" or the "Adjustable Rate
Group Certificates", and together with the Fixed Rate Group Certificates, the
"Offered Certificates"), (viii) the Class B Certificates, (ix) the residual
class with respect to the Upper-Tier REMIC held by the Trust (the "Class R
Certificates") and (x) the residual class with respect to the Lower-Tier REMIC
held by the Trust (the "Class RL Certificates", together with the Offered
Certificates, the Class B Certificates and the Class R Certificates, the
"Certificates"). Only the Offered Certificates are offered by the Underwriters.

                  The Offered Certificates will be issued by the Advanta
Mortgage Loan Trust 1999-2 (the "Trust"), and will evidence in the aggregate the
beneficial interest in a trust estate (the "Trust Estate") consisting primarily
of a pool of closed-end mortgage loans having fixed rates of interest (the
"Fixed Rate Group"), a pool of closed-end mortgage loans having adjustable rates
of interest (the "ARM Group", and together with the Fixed Rate Group, the
"Mortgage Loans"), amounts on deposit with Bankers Trust Company of California,
N.A., as trustee of the Trust (the "Trustee") in an account to be used to
acquire additional mortgage loans following the Closing Date (as hereinafter
defined) for the Trust (the "Pre-Funding Account") and certain related property.
The Mortgage Loans shall have, on or about June 3, 1999 (the "Closing Date"), an
aggregate principal balance of approximately $478,400,000 and the Pre-Funding
Account shall have approximately $39,100,000, which amount may be applied to the
purchase of additional


<PAGE>   3


loans for the Fixed Rate Group during the period from the Closing Date to on or
before July 16, 1999. The Offered Certificates are to be issued under a pooling
and servicing agreement, to be dated as of May 1, 1999 (the "Pooling and
Servicing Agreement"), among the Company, as Sponsor, Advanta Mortgage Corp.
USA, as Master Servicer, and the Trustee.

                  On or prior to the date of issuance of the Certificates, the
Company will obtain a certificate guaranty insurance policy (the "Policy")
issued by Ambac Assurance Corporation (the "Insurer") which will unconditionally
and irrevocably guarantee to the Trustee for the benefit of the holders of the
Offered Certificates the amount by which (i) the Group I Insured Distribution
Amount (as defined in the Pooling and Servicing Agreement), as applicable, for
the Fixed Rate Group Certificates exceeds Group I Total Available Funds (as
defined in the Pooling and Servicing Agreement) and (ii) the Group II Insured
Distribution Amount (as defined in the Pooling and Servicing Agreement), as
applicable, for the Adjustable Rate Group Certificates exceeds the Group II
Total Available Funds (as defined in the Pooling and Servicing Agreement).

                  The Offered Certificates are more fully described in a
Registration Statement which the Company has furnished to the Underwriters.
Capitalized terms used but not defined herein shall have the meanings given to
them in the Pooling and Servicing Agreement.

                  Simultaneously with the execution of the Pooling and Servicing
Agreement, the Company will enter into a conveyance agreement pursuant to the
Master Loan Transfer Agreement dated on or about May 1, 1999 among the Trustee,
Advanta Mortgage Conduit Services, Inc. and the Affiliated Originators or the
Unaffiliated Originators named therein (together, the "Purchase Agreement"),
pursuant to which the Affiliated Originators and the Unaffiliated Originators
will transfer to the Company all of their right, title and interest in and to
the Mortgage Loans as of the Closing Date.

                  The Company will also enter into an Indemnification Agreement
(the "Indemnification Agreement") dated as of May 26, 1999 among the
Underwriters and the Insurer.

                  Section 1. Representations and Warranties of the Company. The
Company represents and warrants to, and agrees with the Underwriters that:

                           a. Registration Statements on Form S-3 (registration
         statement number 333-777927), as amended by Post-Effective Amendments
         thereto, have (i) been prepared by the Company in conformity with the
         requirements of the Securities Act of 1933 (the "Securities Act") and
         the rules and regulations (the "Rules and Regulations") of the United
         States Securities and Exchange Commission (the "Commission")
         thereunder, (ii) been filed with the Commission under the Securities
         Act and (iii) become effective under the Securities Act. Copies of such
         Registration Statements have been delivered by the Company to the
         Underwriters. As used in this Agreement, "Effective Time" means the
         date and the time as of which such Registration Statements, or the most
         recent post-effective amendment thereto, if any, was declared effective
         by the Commission; "Effective Date" means the date of the Effective
         Time; "Preliminary Prospectus" means each prospectus included in such
         Registration Statements, or amendments thereof, including a preliminary
         prospectus supplement which, as completed, is proposed to be



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         used in connection with the sale of the Offered Certificates and any
         prospectus filed with the Commission by the Company with the consent of
         the Underwriters pursuant to Rule 424(a) of the Rules and Regulations;
         "Registration Statement" means such registration statements, as amended
         by all Post-Effective Amendments thereto heretofore filed with the
         Commission, at the Effective Time, including any documents incorporated
         by reference therein at such time; and "Prospectus" means such final
         prospectus, as supplemented by a final prospectus supplement (the
         "Prospectus Supplement") relating to the Offered Certificates, as first
         filed with the Commission pursuant to paragraph (1) or (4) of Rule
         424(b) of the Rules and Regulations. Reference made herein to any
         Preliminary Prospectus or to the Prospectus shall be deemed to refer to
         and include any documents incorporated by reference therein pursuant to
         Item 12 of Form S-3 under the Securities Act, as of the date of such
         Preliminary Prospectus or the Prospectus, as the case may be, and any
         reference to any amendment or supplement to any Preliminary Prospectus
         or the Prospectus shall be deemed to refer to and include any document
         filed under the Securities Exchange Act of 1934 (the "Exchange Act")
         after the date of such Preliminary Prospectus or the Prospectus, as the
         case may be, and incorporated by reference in such Preliminary
         Prospectus or the Prospectus, as the case may be; and any reference to
         any amendment to the Registration Statement shall be deemed to include
         any report of the Company filed with the Commission pursuant to Section
         13(a) or 15(d) of the Exchange Act after the Effective Time that is
         incorporated by reference in the Registration Statement. The Commission
         has not issued any order preventing or suspending the use of any
         Preliminary Prospectus. There are no contracts or documents of the
         Company which are required to be filed as exhibits to the Registration
         Statement pursuant to the Securities Act or the Rules and Regulations
         which have not been so filed or incorporated by reference therein on or
         prior to the Effective Date of the Registration Statements. The
         conditions for use of Form S-3, as set forth in the General
         Instructions thereto, have been satisfied.

                           To the extent that any Underwriter (i) has provided
         to the Company Collateral term sheets (as hereinafter defined) that
         such Underwriter has provided to a prospective investor, the Company
         has filed such Collateral term sheets as an exhibit to a report on Form
         8-K within two business days of its receipt thereof, or (ii) has
         provided to the Company Structural term sheets or Computational
         Materials (each as defined below) that such Underwriter has provided to
         a prospective investor, the Company will file or cause to be filed with
         the Commission a report on Form 8-K containing such Structural term
         sheet and Computational Materials, as soon as reasonably practicable
         after the date of this Agreement, but in any event, not later than the
         date on which the Prospectus is filed with the Commission pursuant to
         Rule 424 of the Rules and Regulations.

                           b. The Registration Statement conforms, and the
         Preliminary Prospectus and the Prospectus and any further amendments or
         supplements to the Registration Statement or the Preliminary Prospectus
         and the Prospectus will, when they become effective or are filed with
         the Commission, as the case may be, conform in all respects to the
         requirements of the Securities Act and the Rules and Regulations. The
         Registration Statement, as of the Effective Date thereof and of any
         amendment thereto, did not contain an untrue statement of a material
         fact or omit to state a material fact



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         required to be stated therein or necessary to make the statements
         therein not misleading. The Prospectus as of its date, and as amended
         or supplemented as of the Closing Date does not and will not contain
         any untrue statement of a material fact or omit to state a material
         fact necessary in order to make the statements therein, in the light of
         the circumstances under which they were made, not misleading; provided
         that no representation or warranty is made as to information contained
         in or omitted from the Registration Statement or the Prospectus in
         reliance upon and in conformity with written information furnished to
         the Company in writing by the Underwriters expressly for use therein.

                           c. The documents incorporated by reference in the
         Prospectus, when they became effective or were filed with the
         Commission, as the case may be, conformed in all material respects to
         the requirements of the Securities Act or the Exchange Act, as
         applicable, and the rules and regulations of the Commission thereunder,
         and none of such documents contained an untrue statement of a material
         fact or omitted to state a material fact required to be stated therein
         or necessary to make the statements therein not misleading; and any
         further documents so filed and incorporated by reference in the
         Prospectus, when such documents become effective or are filed with the
         Commission, as the case may be, will conform in all material respects
         to the requirements of the Securities Act or the Exchange Act, as
         applicable, and the rules and regulations of the Commission thereunder
         and will not contain an untrue statement of a material fact or omit to
         state a material fact required to be stated therein or necessary to
         make the statements therein not misleading.

                           d. Since the respective dates as of which information
         is given in the Prospectus, there has not been any material adverse
         change in the general affairs, management, financial condition, or
         results of operations of the Company, otherwise than as set forth or
         contemplated in the Prospectus as supplemented or amended as of the
         Closing Date.

                           e. The Company has been duly incorporated and is
         validly existing as a corporation in good standing under the laws of
         its jurisdiction of incorporation, is duly qualified to do business and
         is in good standing as a foreign corporation in each jurisdiction in
         which its ownership or lease of property or the conduct of its business
         requires such qualification, and has all power and authority necessary
         to own or hold its properties, to conduct the business in which it is
         engaged and to enter into and perform its obligations under this
         Agreement, the Pooling and Servicing Agreement, the Indemnification
         Agreement, the Insurance and Indemnity Agreement, dated as of June 3,
         1999, between the Insurer, Master Servicer, Sponsor, the Trust and the
         Trustee (the "Insurance Agreement"), and the Purchase Agreement, and to
         cause the Certificates to be issued.

                           f. There are no actions, proceedings or
         investigations pending before or threatened by any court,
         administrative agency or other tribunal to which the Company is a party
         or of which any of its properties is the subject (a) which if
         determined adversely to the Company would have a material adverse
         effect on the business or financial



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<PAGE>   6


         condition of the Company, (b) which asserts the invalidity of this
         Agreement, the Pooling and Servicing Agreement, the Insurance
         Agreement, the Indemnification Agreement, the Purchase Agreement, or
         the Certificates, (c) which seeks to prevent the issuance of the
         Certificates or the consummation by the Company of any of the
         transactions contemplated by the Pooling and Servicing Agreement, the
         Insurance Agreement, the Indemnification Agreement, the Purchase
         Agreement or this Agreement, as the case may be, or (d) which might
         materially and adversely affect the performance by the Company of its
         obligations under, or the validity or enforceability of, the Pooling
         and Servicing Agreement, the Insurance Agreement, the Indemnification
         Agreement, the Purchase Agreement, this Agreement or the Certificates.

                           g. This Agreement has been, and the Pooling and
         Servicing Agreement, the Insurance Agreement, the Indemnification
         Agreement and the Purchase Agreement when executed and delivered as
         contemplated hereby and thereby will have been, duly authorized,
         executed and delivered by the Company, and this Agreement constitutes,
         and the Pooling and Servicing Agreement, the Insurance Agreement, the
         Indemnification Agreement and the Purchase Agreement when executed and
         delivered as contemplated herein, will constitute, legal, valid and
         binding instruments enforceable against the Company in accordance with
         their respective terms, subject as to enforceability to (x) applicable
         bankruptcy, reorganization, insolvency, moratorium or other similar
         laws affecting creditors' rights generally, (y) general principles of
         equity (regardless of whether enforcement is sought in a proceeding in
         equity or at law), and (z) with respect to rights of indemnity under
         this Agreement, the Indemnification Agreement and limitations of public
         policy under applicable securities laws.

                           h. The execution, delivery and performance of this
         Agreement, the Pooling and Servicing Agreement, the Insurance
         Agreement, the Indemnification Agreement and the Purchase Agreement by
         the Company and the consummation of the transactions contemplated
         hereby and thereby, and the issuance and delivery of the Certificates
         do not and will not conflict with or result in a breach or violation of
         any of the terms or provisions of, or constitute a default under, any
         indenture, mortgage, deed of trust, loan agreement or other agreement
         or instrument to which the Company is a party, by which the Company is
         bound or to which any of the property or assets of the Company or any
         of its subsidiaries is subject, nor will such actions result in any
         violation of the provisions of the articles of incorporation or by-laws
         of the Company or any statute or any order, rule or regulation of any
         court or governmental agency or body having jurisdiction over the
         Company or any of its properties or assets.

                           i. Arthur Andersen LLP are independent public
         accountants with respect to the Company as required by the Securities
         Act and the Rules and Regulations.

                           j. The direction by the Company to the Trustee to
         execute, authenticate, issue and deliver the Certificates has been duly
         authorized by the Company, and assuming the Trustee has been duly
         authorized to do so, when executed, authenticated, issued and delivered
         by the Trustee in accordance with the Pooling and



                                     - 5 -
<PAGE>   7


         Servicing Agreement, the Certificates will be validly issued and
         outstanding and will be entitled to the benefits provided by the
         Pooling and Servicing Agreement.

                           k. No consent, approval, authorization, order,
         registration or qualification of or with any court or governmental
         agency or body of the United States is required for the issuance of the
         Certificates and the sale of the Offered Certificates to the
         Underwriters, or the consummation by the Company of the other
         transactions contemplated by this Agreement, the Pooling and Servicing
         Agreement, the Insurance Agreement, the Indemnification Agreement and
         the Purchase Agreement, except such consents, approvals,
         authorizations, registrations or qualifications as may be required
         under State securities or Blue Sky laws in connection with the purchase
         and distribution of the Offered Certificates by the Underwriters or as
         have been obtained.

                           l. The Company possesses all material licenses,
         certificates, authorities or permits issued by the appropriate State,
         Federal or foreign regulatory agencies or bodies necessary to conduct
         the business now conducted by it and as described in the Prospectus,
         and the Company has not received notice of any proceedings relating to
         the revocation or modification of any such license, certificate,
         authority or permit which if decided adversely to the Company would,
         singly or in the aggregate, materially and adversely affect the conduct
         of its business, operations or financial condition.

                           m. At the time of execution and delivery of the
         Pooling and Servicing Agreement, the Company will or will cause the
         Trust to: (i) have good title to the interest in the Mortgage Loans,
         free and clear of any lien, mortgage, pledge, charge, encumbrance,
         adverse claim or other security interest (collectively, "Liens"); (ii)
         not have assigned to any person any of its right, title or interest in
         the Mortgage Loans, in the Purchase Agreement, in the Pooling and
         Servicing Agreement or in the Certificates being issued pursuant
         thereto; and (iii) have the power and authority to sell its interest in
         or cause the sale of the Mortgage Loans to the Trustee, on behalf of
         the Trust, and to sell the Offered Certificates to the Underwriters.
         Upon execution and delivery of the Pooling and Servicing Agreement by
         the Trustee, the Trustee will have acquired beneficial ownership of all
         of the Company's right, title and interest in and to the Mortgage
         Loans. Upon delivery to the Underwriters of the Offered Certificates,
         the Underwriters will have good title to the Offered Certificates, free
         of any Liens.

                           n. As of the opening of business on May 1, 1999 ( the
         "Cut-Off Date"), and on each Subsequent Cut-Off Date (as defined in the
         Pooling and Servicing Agreement) each of the Mortgage Loans will meet
         the eligibility criteria described in the Prospectus and will conform
         to the descriptions thereof contained in the Prospectus.

                           o. Neither the Company nor the Trust created by the
         Pooling and Servicing Agreement is an "investment company" within the
         meaning of such term under the Investment Company Act of 1940 (the
         "1940 Act") and the rules and regulations of the Commission thereunder.


                                     - 6 -
<PAGE>   8


                           p. At the Closing Date, the Offered Certificates and
         the Pooling and Servicing Agreement will conform in all material
         respects to the descriptions thereof contained in the Prospectus.

                           q. At the Closing Date, the Offered Certificates
         shall have been rated in the highest rating category by at least two
         nationally recognized rating agencies.

                           r. Any taxes, fees and other governmental charges in
         connection with the execution, delivery and issuance of this Agreement,
         the Pooling and Servicing Agreement, the Insurance Agreement, the
         Indemnification Agreement, the Purchase Agreement and the Certificates
         have been paid or will be paid at or prior to the Closing Date.

                           s. At the Closing Date, each of the representations
         and warranties of the Company set forth in the Pooling and Servicing
         Agreement will be true and correct in all material respects.

                  Any certificate signed by an officer of the Company and
delivered to the Representative or counsel for the Underwriters in connection
with an offering of the Offered Certificates shall be deemed, and shall state
that it is, a representation and warranty as to the matters covered thereby to
each person to whom the representations and warranties in this Section 1 are
made.

                  Section 2. Purchase and Sale. The commitment of the
Underwriters to purchase the Offered Certificates pursuant to this Agreement
shall be deemed to have been made on the basis of the representations and
warranties herein contained and shall be subject to the terms and conditions
herein set forth. The Company agrees to instruct the Trustee to issue and agrees
to sell to the Underwriters, and the Underwriters agree (except as provided in
Sections 10 and 11 hereof) to purchase from the Company the aggregate initial
principal amounts of Offered Certificates set forth on Schedule A, at the
purchase price or prices set forth in Schedule A.

                  The obligations of the Underwriters hereunder to purchase the
Offered Certificates of each Class shall be several and not joint. Each
Underwriter's obligation shall be to purchase the aggregate principal amount of
Offered Certificates as is indicated with respect to each Underwriter under the
caption "Underwriting" in the Prospectus. The rights of the Company and a
non-defaulting Underwriter shall be as set forth in Section 13 hereof.

                  Section 3. Delivery and Payment. Delivery of and payment for
the Offered Certificates to be purchased by the Underwriters shall be made at
the offices of Dewey Ballantine LLP, 1301 Sixth Avenue, New York, New York
10019, or at such other place as shall be agreed upon by the Representative and
the Company at 10:00 A.M. New York City time on June 3, 1999 or at such other
time or date as shall be agreed upon by the Representative and the Company.
Payment shall be made to the Company by wire transfer of same day funds payable
to the account of the Company. Delivery of the Offered Certificates shall be
made to the Representative for the accounts of the Underwriters against payment
of the purchase price thereof. The Offered Certificates shall be in such
denominations and registered in such names as the Company and the



                                     - 7 -
<PAGE>   9


Representative have agreed upon at least two business days prior to the Closing
Date. The Offered Certificates will be made available for examination by the
Representative no later than 2:00 p.m. New York City time on the first business
day prior to the Closing Date.

                  Section 4. Offering by the Underwriters. It is understood
that, subject to the terms and conditions hereof, the Underwriters propose to
offer the Offered Certificates for sale to the public as set forth in the
Prospectus.

                  Section 5. Covenants of the Company. The Company agrees as
follows:

                           a. (i) To prepare the Preliminary Prospectus
         Supplement and the Prospectus Supplement in a form approved by the
         Representative and to file such Preliminary Prospectus Supplement and
         the Prospectus Supplement pursuant to Rule 424(b) under the Securities
         Act not later than the Commission's close of business on the second
         business day following the execution and delivery of this Agreement;
         (ii) to make no further amendment or any supplement to the Registration
         Statement or to the Preliminary Prospectus and the Prospectus prior to
         the Closing Date except as permitted herein; (iii) to advise the
         Representative, promptly after it receives notice thereof, of the time
         when any amendment to the Registration Statement has been filed or
         becomes effective or any supplement to the Preliminary Prospectus and
         the Prospectus or any amended Preliminary Prospectus or the Prospectus
         has been filed and to furnish the Representative with copies thereof;
         (iv) to file promptly all reports and any definitive proxy or
         information statements required to be filed by the Company with the
         Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the
         Exchange Act subsequent to the date of the Preliminary Prospectus and
         the Prospectus and, for so long as the delivery of a prospectus is
         required in connection with the offering or sale of the Offered
         Certificates; and (v) to promptly advise the Representative of its
         receipt of notice of the issuance by the Commission of any stop order
         or of: (w) any order preventing or suspending the use of any
         Preliminary Prospectus or the Prospectus; (x) the suspension of the
         qualification of the Offered Certificates for offering or sale in any
         jurisdiction; (y) the initiation of or threat of any proceeding for any
         such purpose; (z) any request by the Commission for the amending or
         supplementing of the Registration Statement or the Prospectus or for
         additional information. In the event of the issuance of any stop order
         or of any order preventing or suspending the use of any Preliminary
         Prospectus or the Prospectus or suspending any such qualification, the
         Company promptly shall use its best efforts to obtain the withdrawal of
         such order or suspension.

                           b. To furnish promptly to the Representative and to
         counsel for the Underwriters a signed copy of the Registration
         Statement as originally filed with the Commission, and of each
         amendment thereto filed with the Commission, including all consents and
         exhibits filed therewith.

                           c. To deliver promptly to the Representative such
         number of the following documents as the Representative shall
         reasonably request: (i) conformed copies of the Registration Statement
         as originally filed with the Commission and each amendment thereto (in
         each case including exhibits); (ii) each Preliminary Prospectus, the
         Prospectus



                                     - 8 -
<PAGE>   10


         and any amended or supplemented Prospectus; and (iii) any document
         incorporated by reference in the Prospectus (including exhibits
         thereto). If the delivery of a prospectus is required at any time prior
         to the expiration of nine months after the Effective Time in connection
         with the offering or sale of the Offered Certificates, and if at such
         time any events shall have occurred as a result of which the Prospectus
         as then amended or supplemented would include any untrue statement of a
         material fact or omit to state any material fact necessary in order to
         make the statements therein, in the light of the circumstances under
         which they were made when such Prospectus is delivered, not misleading,
         or, if for any other reason it shall be necessary during such same
         period to amend or supplement the Prospectus or to file under the
         Exchange Act any document incorporated by reference in the Prospectus
         in order to comply with the Securities Act or the Exchange Act, the
         Company shall notify the Representative and, upon the Representative's
         request, shall file such document and prepare and furnish without
         charge to the Underwriters and to any dealer in securities as many
         copies as the Representative may from time to time reasonably request
         of an amended Prospectus or a supplement to the Prospectus which
         corrects such statement or omission or effects such compliance, and in
         case any of the Underwriters are required to deliver a Prospectus in
         connection with sales of any of the Offered Certificates at any time
         nine months or more after the Effective Time, upon the request of the
         Representative but at the expense of such Underwriter, the Company
         shall prepare and deliver to such Underwriter as many copies as such
         Underwriter may reasonably request of an amended or supplemented
         Prospectus complying with Section 10(a)(3) of the Securities Act.

                           d. To file promptly with the Commission any amendment
         to the Registration Statement or the Prospectus or any supplement to
         the Prospectus that may, in the judgment of the Company or the
         Representative, be required by the Securities Act or requested by the
         Commission.

                           e. Prior to filing with the Commission any (i)
         Preliminary Prospectus, (ii) amendment to the Registration Statement or
         supplement to the Prospectus, or document incorporated by reference in
         the Prospectus, or (iii) Prospectus pursuant to Rule 424 of the Rules
         and Regulations, to give at least three business days prior
         notification to the Representative and to furnish a copy thereof to the
         Representative and counsel for the Underwriters, provided, however,
         that if any of the foregoing filings referred to in (i), (ii), or (iii)
         relate to the Offered Certificates, the Company shall obtain the
         consent of the Representative to such filing, which consent shall not
         be unreasonably withheld.

                           f. [Reserved].

                           g. To use its best efforts, in cooperation with the
         Representative, to qualify the Offered Certificates for offering and
         sale under the applicable securities laws of such states and other
         jurisdictions of the United States as the Representative may designate,
         and maintain or cause to be maintained such qualifications in effect
         for as long as may be required for the distribution of the Offered
         Certificates. The Company will file or cause the filing of such
         statements and reports as may be required by the laws of each
         jurisdiction in which the Offered Certificates have been so qualified.


                                     - 9 -
<PAGE>   11


                           h. Except with respect to the Sponsor's Advanta
         Revolving Home Loan Equity Trust 1999-A, the Company shall not, without
         the Representative's prior written consent, which consent shall not be
         unreasonably withheld, publicly offer or sell or contract to sell any
         mortgage pass-through securities, collateralized mortgage obligations
         or other similar securities representing interests in or secured by
         other mortgage-related assets originated or owned by the Company for a
         period of 5 business days following the commencement of the offering of
         the Offered Certificates to the public.

                           i. So long as the Offered Certificates shall be
         outstanding, to deliver to the Representative as soon as such
         statements are furnished to the Trustee: (i) the annual statement as to
         compliance delivered to the Trustee pursuant to Article VII of the
         Pooling and Servicing Agreement; (ii) the annual statement of a firm of
         independent public accountants furnished to the Trustee pursuant to
         Article VIII of the Pooling and Servicing Agreement; and (iii) the
         Monthly Statement furnished to the Certificateholders pursuant to
         Article VII of the Pooling and Servicing Agreement.

                           j. To apply the net proceeds from the sale of the
         Offered Certificates in the manner set forth in the Prospectus.

                  Section 6. Conditions to the Underwriters' Obligations. The
obligations of the Underwriters to purchase the Offered Certificates pursuant to
this Agreement are subject to: (i) the accuracy on and as of the Closing Date of
the representations and warranties on the part of the Company herein contained;
(ii) the performance in all material respects by the Company of all of their
respective obligations hereunder; and (iii) the following conditions as of the
Closing Date:

                           a. The Representative shall have received
         confirmation of the effectiveness of the Registration Statement. No
         stop order suspending the effectiveness of the Registration Statement
         or any part thereof shall have been issued and no proceeding for that
         purpose shall have been initiated or threatened by the Commission. Any
         request of the Commission for inclusion of additional information in
         the Registration Statement or the Prospectus shall have been complied
         with.

                           b. None of the Underwriters shall have discovered and
         disclosed to the Company on or prior to the Closing Date that the
         Registration Statement or the Prospectus or any amendment or supplement
         thereto contains an untrue statement of a fact or omits to state a fact
         which, in the opinion of Fried, Frank, Harris, Shriver & Jacobson,
         counsel for the Underwriters, is material and is required to be stated
         therein or is necessary to make the statements therein not misleading.

                           c. All corporate proceedings and other legal matters
         relating to the authorization, form and validity of this Agreement, the
         Pooling and Servicing Agreement, the Purchase Agreement, the Insurance
         Agreement, the Indemnification Agreement, the Certificates, the
         Registration Statement and the Prospectus, and all other legal matters
         relating to this Agreement and the transactions contemplated hereby
         shall be satisfactory in all respects to counsel for the Underwriters,
         and the Company shall have furnished to



                                     - 10 -
<PAGE>   12


         such counsel all documents and information that they may reasonably
         request to enable them to pass upon such matters.

                           d. The Representative shall have received the
         favorable opinion of Dewey Ballantine LLP, special counsel to the
         Company with respect to the following items, dated the Closing Date, to
         the effect that:

                                    1. The Company has been duly organized and
                  is validly existing as a corporation in good standing under
                  the laws of the State of Delaware, and is qualified to do
                  business in each state necessary to enable it to perform its
                  obligations as Sponsor under the Pooling and Servicing
                  Agreement. The Company has the requisite power and authority
                  to execute and deliver, engage in the transactions
                  contemplated by, and perform and observe the conditions of,
                  this Agreement, the Insurance Agreement, the Pooling and
                  Servicing Agreement, the Insurance Agreement, the
                  Indemnification Agreement and the Purchase Agreement.

                                    2. This Agreement, the Certificates, the
                  Pooling and Servicing Agreement, the Insurance Agreement, the
                  Indemnification Agreement and the Purchase Agreement have been
                  duly and validly authorized, executed and delivered by the
                  Company, all requisite corporate action having been taken with
                  respect thereto, and each (other than the Certificates)
                  constitutes the valid, legal and binding agreement of the
                  Company.

                                    3. Neither the transfer of the Mortgage
                  Loans to the Trust Estate, the issuance or sale of the
                  Certificates nor the execution, delivery or performance by the
                  Company of the Pooling and Servicing Agreement, this
                  Agreement, the Insurance Agreement, the Indemnification
                  Agreement or the Purchase Agreement (A) conflicts or will
                  conflict with or results or will result in a breach of, or
                  constitutes or will constitute a default under, (i) any term
                  or provision of the certificate of incorporation or bylaws of
                  the Company; (ii) any term or provision of any material
                  agreement, contract, instrument or indenture, to which the
                  Company is a party or is bound and known to such counsel; or
                  (iii) any order, judgment, writ, injunction or decree of any
                  court or governmental agency or body or other tribunal having
                  jurisdiction over the Company and known to such counsel; or
                  (B) results in, or will result in the creation or imposition
                  of any lien, charge or encumbrance upon the Trust Estate or
                  upon the Certificates, except as otherwise contemplated by the
                  Pooling and Servicing Agreement.

                                    4. With respect to the Mortgage Loans, the
                  endorsement and delivery of each Note, and the preparation,
                  delivery and recording of an Assignment in each case with
                  respect to each Mortgage is sufficient to fully transfer to
                  the Trustee for the benefit of the Owners of the Certificates
                  all right, title and interest of the Company in the Note and
                  Mortgage, as noteholder and mortgagee or assignee thereof,
                  subject to any exceptions set forth in such opinion, and will
                  be sufficient to permit the Trustee to avail itself of all
                  protection available



                                     - 11 -
<PAGE>   13


                  under applicable law against the claims of any present or
                  future creditors of the Company and to prevent any other sale,
                  transfer, assignment, pledge or other encumbrance of the
                  Mortgage Loans by the Company from being enforceable.

                                    5. No consent, approval, authorization or
                  order of, registration or filing with, or notice to, courts,
                  governmental agency or body or other tribunal is required
                  under the laws of the State of New York, for the execution,
                  delivery and performance of the Pooling and Servicing
                  Agreement, this Agreement, the Insurance Agreement, the
                  Indemnification Agreement, the Purchase Agreement or the
                  offer, issuance, sale or delivery of the Offered Certificates
                  or the consummation of any other transaction contemplated
                  thereby by the Company, except such which have been obtained.

                                    6. There are no actions, proceedings or
                  investigations, to such counsel's knowledge, pending or
                  threatened against the Company before any court, governmental
                  agency or body or other tribunal (i) asserting the invalidity
                  of the Pooling and Servicing Agreement, the Insurance
                  Agreement, the Indemnification Agreement, this Agreement, the
                  Purchase Agreement or the Certificates, (ii) seeking to
                  prevent the issuance of the Certificates or the consummation
                  of any of the transactions contemplated by the Pooling and
                  Servicing Agreement, the Indemnification Agreement, or this
                  Agreement, (iii) which would materially and adversely affect
                  the performance by the Company of obligations under, or the
                  validity or enforceability of, the Pooling and Servicing
                  Agreement, the Insurance Agreement, the Indemnification
                  Agreement, the Certificates, the Purchase Agreement or this
                  Agreement or (iv) that would adversely affect the status of
                  the Trust Estate as a "real estate mortgage investment
                  conduit" ("REMIC") as such term is defined in the Internal
                  Revenue Code of 1986, as amended.

                                    7. To the best of the knowledge of such
                  counsel, the Commission has not issued any stop order
                  suspending the effectiveness of the Registration Statement or
                  any order directed to any prospectus relating to the Offered
                  Certificates (including the Prospectus), and has not initiated
                  or threatened any proceeding for that purpose.

                                    8. The Registration Statement and the
                  Prospectus (other than the financial and statistical data
                  included therein, as to which such counsel need express no
                  opinion), including the Incorporated Documents, as of the date
                  on which the Registration Statement was declared effective and
                  as of the date hereof, comply as to form in all material
                  respects with the requirements of the 1933 Act and the rules
                  and regulations thereunder and the Exchange Act and the rules
                  and regulations thereunder, and such counsel does not know of
                  any amendment to the Registration Statement required to be
                  filed, or of any contracts, indentures or other documents of a
                  character required to be filed as an exhibit to the
                  Registration Statement or required to be described in the
                  Registration Statement which has not been filed or described
                  as required.


                                     - 12 -
<PAGE>   14


                                    9. Neither the qualification of the Pooling
                  and Servicing Agreement under the Trust Indenture Act of 1939
                  nor the registration of the Trust created by such Pooling and
                  Servicing Agreement under the Investment Company Act of 1940
                  is presently required.

                                    10. The statements in the Prospectus set
                  forth under the captions "DESCRIPTION OF THE SECURITIES," "THE
                  POOLING AND SERVICING AGREEMENT" and the statements in the
                  Prospectus Supplement set forth under the caption "DESCRIPTION
                  OF THE CERTIFICATES," to the extent such statements purport to
                  summarize certain provisions of the Offered Certificates or of
                  the Pooling and Servicing Agreement, are fair and accurate in
                  all material respects.

                                    11. The statements in the Prospectus and
                  Prospectus Supplement set forth under the captions "ERISA
                  CONSIDERATIONS," "CERTAIN FEDERAL INCOME TAX CONSEQUENCES,"
                  and the statements in the Prospectus set forth under the
                  caption "CERTAIN LEGAL ASPECTS OF MORTGAGE LOANS AND RELATED
                  MATTERS," to the extent that they constitute matters of
                  federal, New York or California law, or federal, New York or
                  California legal conclusions provide a fair and accurate
                  summary of such law or conclusions.

                                    12. Assuming that (a) the Trustee causes the
                  Trust created under the Pooling and Servicing Agreement to
                  elect, as the Trustee has covenanted to do in the Pooling and
                  Servicing Agreement, to be treated as a REMIC and (b) the
                  parties to the Pooling and Servicing Agreement comply with the
                  terms thereof, the Trust will be treated as a REMIC, the
                  Offered Certificates and the Class B Certificates issued
                  pursuant to the Pooling and Servicing Agreement will be
                  treated as the "regular interests" in a REMIC and the Class R
                  Certificates and the Class RL Certificates issued pursuant to
                  the Pooling and Servicing Agreement will be treated as
                  "residual interests" in a REMIC. The Trust will not be subject
                  to tax upon its income or assets by any taxing authority of
                  the State of New York or New York City or of the State of
                  California (except that no opinion need be expressed with
                  respect to any minimum tax).

                                    13. Such opinion shall also relate to
                  comparable matters with respect to the Affiliated Originators
                  and Advanta Mortgage Holding Company.

                                    14. No information has come to such
                  counsel's attention which causes them to believe that the
                  Prospectus (other than the financial statement and other
                  financial and statistical data contained therein, as to which
                  such counsel need express no opinion), as of the date thereof,
                  contained any untrue statement of a material fact or omitted
                  to state a material fact necessary to make the statements
                  therein, in light of the circumstances under which they were
                  made, not misleading.


                                     - 13 -
<PAGE>   15


                                    15. Such other matters as the Representative
                  may reasonably request.

                  In rendering its opinions, the counsel described above may
rely, as to matters of fact, on certificates of responsible officers of the
Company, the Trustee and public officials. Such opinions may also assume the due
authorization, execution and delivery of the instruments and documents referred
to therein by the parties thereto other than the Company.

                           e. The Representative shall have received letters,
         including bring-down letters, from Arthur Andersen LLP, dated on or
         before the Closing Date, in form and substance satisfactory to the
         Representative and counsel for the Underwriters, to the effect that
         they have performed certain specified procedures requested by the
         Representative with respect to the information set forth in the
         Prospectus and certain matters relating to the Company.

                           f. The Offered Certificates shall have received the
         ratings listed on Schedule A hereto, and such ratings shall not have
         been rescinded or downgraded as of the Closing Date. The Representative
         and counsel for the Underwriters shall have received copies of any
         opinions of counsel supplied to the rating organizations relating to
         any matters with respect to the Offered Certificates. Any such opinions
         shall be dated the Closing Date and addressed to the Underwriters or
         accompanied by reliance letters to the Underwriters or shall state that
         the Underwriters may rely upon them.

                           g. The Representative shall have received from the
         Company a certificate, signed by the president, a senior vice president
         or a vice president of the Company, dated the Closing Date, to the
         effect that the signer of such certificate has carefully examined the
         Registration Statement, the Pooling and Servicing Agreement and this
         Agreement and that, to the best of his or her knowledge based upon
         reasonable investigation:

                                    1. the representations and warranties of the
                  Company in this Agreement, as of the Closing Date, and in the
                  Pooling and Servicing Agreement, the Insurance Agreement, the
                  Indemnification Agreement, the Purchase Agreement and in all
                  related agreements, as of the date specified in such
                  agreements, are true and correct, and the Company has complied
                  with all the agreements and satisfied all the conditions on
                  its part to be performed or satisfied at or prior to the
                  Closing Date;

                                    2. except as set forth in the Prospectus,
                  there are no actions, suits or proceedings pending, or to the
                  best of such officer's knowledge, threatened against or
                  affecting the Company which if adversely determined,
                  individually or in the aggregate, would be reasonably likely
                  to adversely affect the Company's obligations under the
                  Pooling and Servicing Agreement, the Insurance Agreement, the
                  Indemnification Agreement, this Agreement or the Purchase
                  Agreement in any material way; and no merger, liquidation,
                  dissolution or bankruptcy of the Company is pending or
                  contemplated;


                                     - 14 -
<PAGE>   16


                                    3. the information contained in the
                  Registration Statement and the Prospectus relating to the
                  Company, the Mortgage Loans or the servicing procedures of it
                  or its affiliates or subservicer is true and accurate in all
                  material respects and nothing has come to his or her attention
                  that would lead such officer to believe that the Registration
                  Statement or Prospectus includes any untrue statement of a
                  material fact or omits to state a material fact necessary to
                  make the statements therein not misleading;

                                    4. the information set forth in the Schedule
                  of Mortgage Loans required to be furnished pursuant to the
                  Pooling and Servicing Agreement is true and correct in all
                  material respects;

                                    5. there has been no amendment or other
                  document filed affecting the articles of incorporation or
                  bylaws of the Company since December 31, 1998, and no such
                  amendment has been authorized. No event has occurred since
                  March 31, 1999, which has affected the good standing of the
                  Company under the laws of the State of Delaware;

                                    6. there has not occurred any material
                  adverse change or, except as set forth in the Prospectus, any
                  development involving a prospective material adverse change,
                  in the condition, financial or otherwise, or in the earnings,
                  business or operations of the Company and its subsidiaries,
                  taken as a whole, from March 31, 1999;

                                    7. on or prior to the Closing Date, there
                  has been no downgrading, nor has any notice been given of (A)
                  any intended or potential downgrading or (B) any review or
                  possible changes in rating the direction of which has not been
                  indicated, if any, accorded the Company or in any rating
                  accorded any securities of the Company, if any, by any
                  "nationally recognized statistical rating organization," as
                  such term is defined for purposes of the 1933 Act; and

                                    8. each person who, as an officer or
                  representative of the Company, signed or signs the
                  Registration Statement, the Pooling and Servicing Agreement,
                  the Insurance Agreement, the Indemnification Agreement, this
                  Agreement, or any other document delivered pursuant hereto, on
                  the date of such execution, or on the Closing Date, as the
                  case may be, in connection with the transactions described in
                  the Pooling and Servicing Agreement, the Insurance Agreement,
                  the Indemnification Agreement, the Purchase Agreement and this
                  Agreement was, at the respective times of such signing and
                  delivery, and is now, duly elected or appointed, qualified and
                  acting as such officer or representative, and the signatures
                  of such persons appearing on such documents are their genuine
                  signatures.

                  The Company shall attach to such certificate a true and
correct copy of its certificate or articles of incorporation, as appropriate,
and bylaws which are in full force and effect



                                     - 15 -
<PAGE>   17


on the date of such certificate and a certified true copy of the resolutions of
its Board of Directors with respect to the transactions contemplated herein.

                           h. The Representative shall have received a favorable
         opinion of counsel to the Trustee, dated the Closing Date and in form
         and substance satisfactory to the Representative, to the effect that:

                                    1. the Trustee is a national banking
                  association duly organized, validly existing and in good
                  standing under the laws of the United States and has the power
                  and authority to enter into and to take all actions required
                  of it under the Pooling and Servicing Agreement;

                                    2. the Pooling and Servicing Agreement has
                  been duly authorized, executed and delivered by the Trustee
                  and the Pooling and Servicing Agreement constitutes the legal,
                  valid and binding obligation of the Trustee, enforceable
                  against the Trustee in accordance with its terms, except as
                  enforceability thereof may be limited by (A) bankruptcy,
                  insolvency, reorganization or other similar laws affecting the
                  enforcement of creditors' rights generally, as such laws would
                  apply in the event of a bankruptcy, insolvency or
                  reorganization or similar occurrence affecting the Trustee,
                  and (B) general principles of equity regardless of whether
                  such enforcement is sought in a proceeding at law or in
                  equity;

                                    3. no consent, approval, authorization or
                  other action by any governmental agency or body or other
                  tribunal is required on the part of the Trustee in connection
                  with its execution and delivery of the Pooling and Servicing
                  Agreement or the performance of its obligations thereunder;

                                    4. the Offered Certificates have been duly
                  executed, authenticated and delivered by the Trustee; and

                                    5. the execution and delivery of, and
                  performance by the Trustee of its obligations under, the
                  Pooling and Servicing Agreement do not conflict with or result
                  in a violation of any statute or regulation applicable to the
                  Trustee, or the charter or bylaws of the Trustee, or to the
                  best knowledge of such counsel, any governmental authority
                  having jurisdiction over the Trustee or the terms of any
                  indenture or other agreement or instrument to which the
                  Trustee is a party or by which it is bound.

                  In rendering such opinion, such counsel may rely, as to
matters of fact, on certificates of responsible officers of the Company, the
Trustee and public officials. Such opinion may also assume the due
authorization, execution and delivery of the instruments and documents referred
to therein by the parties thereto other than the Trustee.

                           i. The Representative shall have received from the
         Trustee a certificate, signed by the President, a senior vice president
         or a vice president of the



                                     - 16 -
<PAGE>   18


         Trustee, dated the Closing Date, to the effect that each person who, as
         an officer or representative of the Trustee, signed or signs the
         Offered Certificates, the Pooling and Servicing Agreement or any other
         document delivered pursuant hereto, on the date hereof or on the
         Closing Date, in connection with the transactions described in the
         Pooling and Servicing Agreement was, at the respective times of such
         signing and delivery, and is now, duly elected or appointed, qualified
         and acting as such officer or representative, and the signatures of
         such persons appearing on such documents are their genuine signatures.

                           j. The Policy relating to the Offered Certificates
         shall have been duly executed and issued at or prior to the Closing
         Date and shall conform in all material respects to the description
         thereof in the Prospectus.

                           k. The Representative shall have received a favorable
         opinion of in-house counsel to the Insurer, dated the Closing Date and
         in form and substance satisfactory to counsel for the Underwriters, to
         the effect that:

                                    1. The Insurer is a stock insurance company
                  duly organized and validly existing under the laws of the
                  State of Wisconsin and duly qualified to conduct an insurance
                  business in the State of California and the State of New York.
                  The Insurer is validly licensed and authorized to issue the
                  Policy and perform its obligations under the Policy in
                  accordance with the terms thereof under the laws of the State
                  of California, State of New York and the State of Wisconsin.

                                    2. The Insurer has full corporate power and
                  authority to execute and deliver the Policy and the Policy has
                  been duly authorized, executed and delivered by the Insurer
                  and constitutes a legal, valid and binding obligation of the
                  Insurer enforceable in accordance with its terms except to the
                  extent that the enforceability (but not the validity) of such
                  obligation may be limited by any applicable bankruptcy,
                  insolvency, liquidation, rehabilitation or other similar law
                  or enactment now or hereafter enacted affecting the
                  enforcement of creditors' rights and by general principles of
                  equity.

                                    3. The execution and delivery by the Insurer
                  of the Policy, the Insurance Agreement and the Indemnification
                  Agreement will not, and the consummation of the transactions
                  contemplated thereby and the satisfaction of the terms thereof
                  will not, conflict with or result in a breach of any of the
                  terms, conditions or provisions of the Certificate of
                  Incorporation or By-Laws of the Insurer, or any restriction
                  contained in any contract, agreement or instrument to which
                  the Insurer is a party or by which it is bound or constitute a
                  default under any of the foregoing.

                                    4. Proceedings legally required for the
                  issuance of the Policy, and the execution, delivery and
                  performance of the Insurance Agreement and the Indemnification
                  Agreement have been taken by the Insurer and licenses, orders,
                  consents or other authorizations or approvals of any
                  governmental boards or bodies legally required for the
                  enforceability of the Policy have been obtained; any



                                     - 17 -
<PAGE>   19


                  proceedings not taken and any licenses, authorizations or
                  approvals not obtained are not material to the enforceability
                  of the Policy, the Insurance Agreement and the Indemnification
                  Agreement.

                                    5. The Policy is exempt from registration
                  under the Securities Act of 1933, as amended.

                                    6. There is no action, suit or proceeding
                  pending against or affecting the Insurer in any court, or
                  before or by any governmental body, which is likely to affect
                  or impair the validity or enforceability of the Policy, the
                  Insurance Agreement or the Indemnification Agreement.

                                    7. The statements contained in the
                  Prospectus under the heading "THE CERTIFICATE INSURER" and
                  "THE CERTIFICATE INSURANCE POLICY", insofar as such statements
                  constitute summaries of the matters referred to therein,
                  accurately reflect and fairly present the information
                  purported to be shown and, insofar as such statements describe
                  the Insurer, fairly and accurately describe the Insurer, other
                  than any financial or statistical information contained or
                  incorporated by reference therein, as to which no opinion is
                  expressed.

                                    8. The Insurer is authorized to deliver the
                  Insurance Agreement and the Indemnification Agreement, and
                  each of the Insurance Agreement and the Indemnification
                  Agreement has been duly executed and is the valid and binding
                  obligation of the Insurer enforceable in accordance with its
                  terms except to the extent that the enforceability (but not
                  the validity) of such obligation may be limited by any
                  applicable bankruptcy, insolvency, liquidation, rehabilitation
                  or other similar law or enactment now or hereafter enacted
                  affecting the enforcement of creditors' rights and by general
                  principles of equity and subject to principles of public
                  policy limiting the right to enforce the indemnification
                  provisions contained therein insofar as such provisions relate
                  to indemnification for liabilities arising under the
                  securities laws.

                  In rendering this opinion, such counsel may rely, as to
matters of fact, on certificates of responsible officers of the Company, the
Trustee, the Insurer and public officials. Such opinion may assume the due
authorization, execution and delivery of the instruments and documents referred
to therein by the parties thereto other than the Insurer.

                  The Insurer shall attach to such opinion a true and correct
copy of its certificate or articles of incorporation, as appropriate, and its
bylaws, all of which are in full force and effect on the date of such
certificate.

                           l. On or prior to the Closing Date, there has been no
         downgrading, nor has any notice been given of (A) any intended or
         potential downgrading or (B) any review or possible changes in rating
         the direction of which has not been indicated, in the



                                     - 18 -
<PAGE>   20


         rating, if any, accorded the Insurer's claims paying ability by any
         "nationally recognized statistical rating organization," as such term
         is defined for purposes of the 1933 Act.

                           m. On or prior to the Closing Date, there has been no
         downgrading, nor has any notice been given of (A) any intended or
         potential downgrading or (B) any review or possible changes in rating
         the direction of which has not been indicated, in the rating, if any,
         accorded the Company or in any rating accorded any securities of the
         Company, if any, by any "nationally recognized statistical rating
         organization," as such term is defined for purposes of the 1933 Act.

                           n. There has not occurred any change, or any
         development involving a prospective change, in the condition, financial
         or otherwise, or in the earnings, business or operations, since March
         31, 1999, of (A) the Company and its subsidiaries or (B) the Insurer,
         that is in the Representative's judgment material and adverse and that
         makes it in the Representative's judgment impracticable to market the
         Offered Certificates on the terms and in the manner contemplated in the
         Prospectus.

                           o. [Reserved].

                           p. The Representative shall have received from Dewey
         Ballantine LLP, special counsel to the Company, a survey in form and
         substance satisfactory to the Representative, indicating the
         requirements of applicable local law which must be complied with in
         order to transfer and service the Mortgage Loans pursuant to the
         Pooling and Servicing Agreement and the Company shall have complied
         with all such requirements.

                           q. The Representative shall have received from Fried,
         Frank, Harris, Shriver & Jacobson, special counsel to the Underwriters,
         such opinion or opinions, dated the Closing Date, with respect to the
         issuance and sale of the Offered Certificates, the Prospectus and such
         other related matters as the Representative shall reasonably require.

                           r. The Representative and counsel for the
         Underwriters shall have received copies of any opinions of counsel to
         the Company supplied to the Trustee relating to matters with respect to
         the Certificates. Any such opinions shall be dated the Closing Date and
         addressed to the Underwriters or accompanied by reliance letters to the
         Underwriters or shall state the Underwriters may rely thereon.

                           s. The Representative shall have received such
         further information, certificates and documents as the Representative
         may reasonably have requested not fewer than three (3) full business
         days prior to the Closing Date.

                           t. There shall have been executed and delivered by
         Advanta Mortgage Holding Company, the corporate parent of the Company
         ("AMHC"), a letter agreement with the Trustee and the Insurer, pursuant
         to which AMHC agrees to become jointly and severally liable with the
         Company and Advanta Mortgage Corp. USA for the payment of the Joint and
         Several Obligations (as defined in such letter agreement).


                                     - 19 -
<PAGE>   21


                           u. There shall have been executed and delivered by
         AMHC, the corporate parent of the Company, a letter agreement with the
         Underwriters and the Insurer, pursuant to which AMHC agrees to become
         jointly and severally liable with the Company and Advanta Mortgage
         Corp. USA for the payment of the Joint and Several Obligations (as
         defined in such letter agreement).

                           v. Prior to the Closing Date, counsel for the
         Underwriters shall have been furnished with such documents and opinions
         as they may reasonably require for the purpose of enabling them to pass
         upon the issuance and sale of the Offered Certificates as herein
         contemplated and related proceedings or in order to evidence the
         accuracy and completeness of any of the representations and warranties,
         or the fulfillment of any of the conditions, herein contained, and all
         proceedings taken by the Company in connection with the issuance and
         sale of the Offered Certificates as herein contemplated shall be
         satisfactory in form and substance to the Representative and counsel
         for the Underwriters.

                           w. Subsequent to the execution and delivery of this
         Agreement none of the following shall have occurred: (i) trading in
         securities generally on the New York Stock Exchange, the American Stock
         Exchange or the over-the-counter market shall have been suspended or
         minimum prices shall have been established on either of such exchanges
         or such market by the Commission, by such exchange or by any other
         regulatory body or governmental authority having jurisdiction; (ii) a
         banking moratorium shall have been declared by Federal or state
         authorities; (iii) the United States shall have become engaged in
         hostilities, there shall have been an escalation of hostilities
         involving the United States or there shall have been a declaration of a
         national emergency or war by the United States; or (iv) there shall
         have occurred such a material adverse change in general economic,
         political or financial conditions (or the effect of international
         conditions on the financial markets of the United States shall be such)
         as to make it, in the judgment of the Representative, impractical or
         inadvisable to proceed with the public offering or delivery of the
         Offered Certificates on the terms and in the manner contemplated in the
         Prospectus.

                           x. The Offered Certificates shall have received the
         ratings set forth on Schedule A hereto.

                  If any condition specified in this Section 6 shall not have
been fulfilled when and as required to be fulfilled, this Agreement may be
terminated by the Representative by notice to the Company at any time at or
prior to the Closing Date, and such termination shall be without liability of
any party to any other party except as provided in Section 7.

                  All opinions, letters, evidence and certificates mentioned
above or elsewhere in this Agreement shall be deemed to be in compliance with
the provisions hereof only if they are in form and substance reasonably
satisfactory to counsel for the Underwriters.

                  Section 7. Payment of Expenses. The Company agrees to pay: (a)
the costs incident to the authorization, issuance, sale and delivery of the
Offered Certificates and any taxes payable in connection therewith; (b) the
costs incident to the preparation, printing and filing under the Securities Act
of the Registration Statement and any amendments and exhibits thereto; (c) the



                                     - 20 -
<PAGE>   22


costs of distributing the Registration Statement as originally filed and each
amendment thereto and any post-effective amendments thereof (including, in each
case, exhibits), the Preliminary Prospectus, the Prospectus and any amendment or
supplement to the Prospectus or any document incorporated by reference therein,
all as provided in this Agreement; (d) the fees and expenses of qualifying the
Offered Certificates under the securities laws of the several jurisdictions as
provided in Section 5(g) hereof and of preparing, printing and distributing a
Blue Sky Memorandum and a Legal Investment Survey (including related fees and
expenses of counsel to the Underwriters); (e) any fees charged by securities
rating services for rating the Offered Certificates; (f) the costs and expenses
of Dewey Ballantine LLP, counsel to the Company; and (g) all other costs and
expenses incident to the performance of the obligations of the Company; provided
that, except as provided in this Section 7, the Underwriters shall pay their own
costs and expenses, including the costs and expenses of Fried, Frank, Harris,
Shriver & Jacobson, any transfer taxes on the Offered Certificates which they
may sell and the expenses of advertising any offering of the Offered
Certificates made by the Underwriters.

                  If this Agreement is terminated by the Representative, in
accordance with the provisions of Section 6 or Section 10, the Company shall
reimburse the Underwriters for their respective reasonable out-of-pocket
expenses, including fees and disbursements of Fried, Frank, Harris, Shriver &
Jacobson, counsel for the Underwriters.

                  Section 8. Indemnification and Contribution.

                  a. The Company agrees to indemnify and hold harmless each
Underwriter and each person, if any, who controls such Underwriter within the
meaning of Section 15 of the Securities Act from and against any and all loss,
claim, damage or liability, joint or several, or any action in respect thereof
(including, but not limited to, any loss, claim, damage, liability or action
relating to purchases and sales of the Offered Certificates), to which such
Underwriter or any such controlling person may become subject, under the
Securities Act or otherwise, insofar as such loss, claim, damage, liability or
action arises out of, or is based upon, (i) any untrue statement or alleged
untrue statement of a material fact contained in the Registration Statement,
(ii) the omission or alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading,
(iii) any untrue statement or alleged untrue statement of a material fact
contained in the Prospectus or (iv) the omission or alleged omission to state
therein a material fact required to be stated therein or necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading, and shall reimburse such Underwriter and each such
controlling person promptly upon demand for any legal or other expenses
reasonably incurred by such Underwriter or such controlling person in connection
with investigating or defending or preparing to defend against any such loss,
claim, damage, liability or action as such expenses are incurred; provided,
however, that the Company shall not be liable in any such case to the extent
that any such loss, claim, damage, liability or action arises out of, or is
based upon, any untrue statement or alleged untrue statement or omission or
alleged omission made in any Preliminary Prospectus, the Prospectus or the
Registration Statement in reliance upon and in conformity with written
information (including any Derived Information) furnished to the Company through
the Representative specifically for inclusion therein; and provided, further,
that as to any Preliminary Prospectus this indemnity shall not inure to the
benefit of any Underwriter or any controlling person on account of any loss,


                                     - 21 -
<PAGE>   23


claim, damage, liability or action arising from the sale of the Offered
Certificates to any person by such Underwriter if such Underwriter failed to
send or give a copy of the Prospectus, as amended or supplemented, to that
person within the time required by the Securities Act, and the untrue statement
or alleged untrue statement of a material fact or the omission or alleged
omission to state a material fact in the Preliminary Prospectus was corrected in
the Prospectus, unless such failure resulted from non-compliance by the Company
with Section 5(c). For purposes of the last proviso to the immediately preceding
sentence, the term "Prospectus" shall not be deemed to include the documents
incorporated therein by reference, and none of the Underwriters shall be
obligated to send or give any supplement or amendment to any document
incorporated therein by reference to any person other than a person to whom such
Underwriter had delivered such incorporated document or documents in response to
a written request therefor. The foregoing indemnity agreement is in addition to
any liability which the Company may otherwise have to any Underwriters or any
controlling person of such Underwriter.

                  b. Each Underwriter agrees severally, and not jointly to
indemnify and hold harmless the Company, each of its directors, each of its
officers who signed the Registration Statement, and each person, if any, who
controls the Company within the meaning of Section 15 of the Securities Act
against any and all loss, claim, damage or liability, or any action in respect
thereof, to which the Company or any such director, officer or controlling
person may become subject, under the Securities Act or otherwise, insofar as
such loss, claim, damage, liability or action arises out of, or is based upon,
(i) any untrue statement or alleged untrue statement of a material fact
contained in the Registration Statement, (ii) the omission or alleged omission
to state therein a material fact required to be stated therein or necessary to
make the statements therein not misleading, (iii) any untrue statement or
alleged untrue statement of a material fact contained in the Prospectus or (iv)
the omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading, but in each case only
to the extent that the untrue statement or alleged untrue statement or omission
or alleged omission was made in reliance upon and in conformity with written
information furnished to the Company by or on behalf of such Underwriter
specifically for inclusion therein, and shall reimburse the Company and any such
director, officer or controlling person for any legal or other expenses
reasonably incurred by the Company or any director, officer or controlling
person in connection with investigating or defending or preparing to defend
against any such loss, claim, damage, liability or action as such expenses are
incurred. The foregoing indemnity agreement is in addition to any liability
which any Underwriter may otherwise have to the Company or any such director,
officer or controlling person.

                  c. Promptly after receipt by any indemnified party under this
Section 8 of notice of any claim or the commencement of any action, such
indemnified party shall, if a claim in respect thereof is to be made against any
indemnifying party under this Section 8, notify the indemnifying party in
writing of the claim or the commencement of that action; provided, however, that
the failure to notify an indemnifying party shall not relieve it from any
liability which it may have under this Section 8 except to the extent it has
been materially prejudiced by such failure, and provided, further, that the
failure to notify any indemnifying party shall not relieve it from any liability
which it may have to any indemnified party otherwise than under this Section 8.


                                     - 22 -
<PAGE>   24


                  If any such claim or action shall be brought against an
indemnified party, and it shall notify the indemnifying party thereof, the
indemnifying party shall be entitled to participate therein and, to the extent
that it wishes, jointly with any other similarly notified indemnifying party, to
assume the defense thereof with counsel reasonably satisfactory to the
indemnified party. After notice from the indemnifying party to the indemnified
party of its election to assume the defense of such claim or action, the
indemnifying party shall not be liable to the indemnified party under this
Section 8 for any legal or other expenses subsequently incurred by the
indemnified party in connection with the defense thereof other than reasonable
costs of investigation.

                  Any indemnified party shall have the right to employ separate
counsel in any such action and to participate in the defense thereof, but the
fees and expenses of such counsel shall be at the expense of such indemnified
party unless: (i) the employment thereof has been specifically authorized by the
indemnifying party in writing; (ii) such indemnified party shall have been
advised by such counsel that there may be one or more legal defenses available
to it which are different from or additional to those available to the
indemnifying party and in the reasonable judgment of such counsel it is
advisable for such indemnified party to employ separate counsel; or (iii) the
indemnifying party has failed to assume the defense of such action and employ
counsel reasonably satisfactory to the indemnified party, in which case, if such
indemnified party notifies the indemnifying party in writing that it elects to
employ separate counsel at the expense of the indemnifying party, the
indemnifying party shall not have the right to assume the defense of such action
on behalf of such indemnified party, it being understood, however, the
indemnifying party shall not, in connection with any one such action or separate
but substantially similar or related actions in the same jurisdiction arising
out of the same general allegations or circumstances, be liable for the
reasonable fees and expenses of more than one separate firm of attorneys (in
addition to local counsel) at any time for all such indemnified parties, which
firm shall be designated in writing by the Underwriters, if the indemnified
parties under this Section 8 consist of the Underwriters or any of their
controlling persons, or by the Company, if the indemnified parties under this
Section 8 consist of the Company or any of the Company's directors, officers or
controlling persons.

                  Each indemnified party, as a condition of the indemnity
agreements contained in Section 8(a) and (b), shall use its best efforts to
cooperate with the indemnifying party in the defense of any such action or
claim. No indemnifying party shall be liable for any settlement of any such
action effected without its written consent (which consent shall not be
unreasonably withheld), but if settled with its written consent or if there be a
final judgment for the plaintiff in any such action, the indemnifying party
agrees to indemnify and hold harmless any indemnified party from and against any
loss or liability by reason of such settlement or judgment.

                  Notwithstanding the foregoing sentence, if at any time an
indemnified party shall have requested an indemnifying party to reimburse the
indemnified party for fees and expenses of counsel, the indemnifying party
agrees that it shall be liable for any settlement of any proceeding effected
without its written consent if (i) such settlement is entered into more than 30
days after receipt by such indemnifying party of the aforesaid request and (ii)
such indemnifying party shall not have reimbursed the indemnified party in
accordance with such request prior to the date of such settlement.


                                     - 23 -
<PAGE>   25


                  d. Each Underwriter agrees to deliver to the Company no later
than the date on which the Preliminary Prospectus Supplement and the Prospectus
Supplement is required to be filed pursuant to Rule 424 with a copy of its
Derived Information (defined below) for filing with the Commission on Form 8-K.

                  e. Each Underwriter agrees, assuming all Company-Provided
Information (defined below) is accurate and complete in all material respects,
to severally and not jointly indemnify and hold harmless the Company, each of
the Company's officers and directors and each person who controls the Company
within the meaning of Section 15 of the Securities Act against any and all
losses, claims, damages or liabilities, joint or several, to which they may
become subject under the Securities Act or otherwise, insofar as such losses,
claims, damages or liabilities (or actions in respect thereof) arise out of or
are based upon any untrue statement of a material fact contained in the Derived
Information provided by such Underwriter, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading, and agrees to
reimburse each such indemnified party for any legal or other expenses reasonably
incurred by him, her or it in connection with investigating or defending or
preparing to defend any such loss, claim, damage, liability or action as such
expenses are incurred. The obligations of each of the Underwriters under this
Section 8(e) shall be in addition to any liability which such Underwriter may
otherwise have.

                  The procedures set forth in Section 8(c) shall be equally
applicable to this Section 8(e).

                  f. For purposes of this Section 8, the term "Derived
Information" means such portion, if any, of the information delivered to the
Company pursuant to Section 8(d) for filing with the Commission on Form 8-K as:

                                    (i)      is not contained in the Prospectus
                                             without taking into account
                                             information incorporated therein by
                                             reference;

                                    (ii)     does not constitute
                                             Company-Provided Information; and

                                    (iii)    is of the type of information
                                             defined as Collateral term sheets,
                                             Structural term sheets or
                                             Computational Materials (as such
                                             terms are interpreted in the
                                             No-Action Letters).

                  "Company-Provided Information" means any computer tape
furnished to the Underwriters by the Company concerning the Mortgage Loans
comprising all or a portion of the Trust Estate.

                  The terms "Collateral term sheet" and "Structural term sheet"
shall have the respective meanings assigned to them in the February 13, 1995
letter (the "PSA Letter") of Cleary, Gottlieb, Steen & Hamilton on behalf of the
Public Securities Association (which letter, and the SEC staff's response
thereto, were publicly available February 17, 1995). The term "Collateral term
sheet" as used herein includes any subsequent Collateral term sheet that
reflects a



                                     - 24 -
<PAGE>   26


substantive change in the information presented. The term "Computational
Materials" has the meaning assigned to it in the May 17, 1994 letter (the
"Kidder letter" and together with the PSA Letter, the "No-Action Letters") of
Brown & Wood on behalf of Kidder, Peabody & Co., Inc. (which letter, and the SEC
staff's response thereto, were publicly available May 20, 1994).

                  g. If the indemnification provided for in this Section 8 shall
for any reason be unavailable to or insufficient to hold harmless an indemnified
party under Section 8(a) or (b) in respect of any loss, claim, damage or
liability, or any action in respect thereof, referred to therein, then each
indemnifying party shall, in lieu of indemnifying such indemnified party,
contribute to the amount paid or payable by such indemnified party as a result
of such loss, claim, damage or liability, or action in respect thereof, (i) in
such proportion as shall be appropriate to reflect the relative benefits
received by the Company on the one hand and the Underwriters on the other from
the offering of the Offered Certificates or (ii) if the allocation provided by
clause (i) above is not permitted by applicable law or if the indemnified party
failed to give the notice required under Section 8(c), in such proportion as is
appropriate to reflect not only the relative benefits referred to in clause (i)
above but also the relative fault of the Company on the one hand and the
Underwriters on the other with respect to the statements or omissions which
resulted in such loss, claim, damage or liability, or action in respect thereof,
as well as any other relevant equitable considerations.

                  The relative benefits of the Underwriters and the Company
shall be deemed to be in such proportion as the total net proceeds from the
offering (before deducting expenses) received by the Company bear to the total
underwriting discounts and commissions.

                  The relative fault of the Underwriters and the Company shall
be determined by reference to whether the untrue or alleged untrue statement of
a material fact or omission or alleged omission to state a material fact relates
to information supplied by the Company or by one of the Underwriters, the intent
of the parties and their relative knowledge, access to information and
opportunity to correct or prevent such statement or omission and other equitable
considerations.

                  The Company and the Underwriters agree that it would not be
just and equitable if contributions pursuant to this Section 8(g) were to be
determined by pro rata allocation or by any other method of allocation which
does not take into account the equitable considerations referred to herein. The
amount paid or payable by an indemnified party as a result of the loss, claim,
damage or liability, or action in respect thereof, referred to above in this
Section 8(g) shall be deemed to include, for purposes of this Section 8(g), any
legal or other expenses reasonably incurred by such indemnified party in
connection with investigating or defending any such action or claim.

                  h. For purposes of this Section 8, in no case shall any
Underwriter be responsible for any amount in excess of (x) the amount received
by such Underwriter in connection with its resale of the Offered Certificates
over (y) the amount paid by such Underwriter to the Company for the Offered
Certificates purchased by such Underwriter hereunder. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f)


                                     - 25 -
<PAGE>   27


of the Securities Act) shall be entitled to contribution from any person who was
not guilty of such fraudulent misrepresentation.

                  g. The Underwriters severally confirm that the information set
forth (i) in the Prospectus Supplement relating to market making and (ii) in the
third paragraph under the caption "Underwriting" in the Prospectus Supplement,
together with the Derived Information, is correct and constitutes the only
information furnished in writing to the Company by or on behalf of the
Underwriters specifically for inclusion in the Registration Statement and the
Prospectus.

                  Section 9. Representations, Warranties and Agreements to
Survive Delivery. All representations, warranties and agreements contained in
this Agreement or contained in certificates of officers of the Company submitted
pursuant hereto shall remain operative and in full force and effect, regardless
of any investigation made by or on behalf of the Underwriters or controlling
persons thereof, or by or on behalf of the Company and shall survive delivery of
any Offered Certificates to the Underwriters.

                  Section 10. Termination of Agreement. The Representative may
terminate this Agreement immediately upon notice to the Company, at any time at
or prior to the Closing Date if any of the events or conditions described in
Section 6(w) of this Agreement shall occur and be continuing. In the event of
any such termination, the covenant set forth in Section 5(g), the provisions of
Section 7, the indemnity agreement set forth in Section 8, and the provisions of
Sections 8 and 9 shall remain in effect.

                  Section 11. Notices. All statements, requests, notices and
agreements hereunder shall be in writing, and:

                           a. if to the Underwriters, shall be delivered or sent
         by mail, telex or facsimile transmission to Morgan Stanley & Co.
         Incorporated, as Representative of the Underwriters, 1585 Broadway, New
         York, New York, 10036, Attention: General Counsel (fax: ( 212 )
         761-0465);

                           b. if to the Company, shall be delivered or sent by
         mail, telex or facsimile transmission to Advanta Mortgage Conduit
         Services, Inc. 10790 Rancho Bernardo Road, San Diego, California 92127
         Attention: General Counsel (Fax: 619-674-3592).

                  Section 12. Persons Entitled to the Benefit of this Agreement.
This Agreement shall inure to the benefit of and be binding upon the
Underwriters and the Company, and their respective successors. This Agreement
and the terms and provisions hereof are for the sole benefit of only those
persons, except that the representations, warranties, indemnities and agreements
contained in this Agreement shall also be deemed to be for the benefit of the
person or persons, if any, who control the Underwriters within the meaning of
Section 15 of the Securities Act, and for the benefit of directors of the
Company, officers of the Company who have signed the Registration Statement and
any person controlling the Company within the meaning of Section 15 of the
Securities Act. Nothing in this Agreement is intended or shall be construed to



                                     - 26 -
<PAGE>   28


give any person, other than the persons referred to in this Section 12, any
legal or equitable right, remedy or claim under or in respect of this Agreement
or any provision contained herein.

                  Section 13. Default by One of the Underwriters. If one of the
Underwriters shall fail on the Closing Date to purchase the Offered Certificates
which it is obligated to purchase hereunder (the "Defaulted Certificates"), the
remaining Underwriters (the "Non-Defaulting Underwriter"), shall have the right,
but not the obligation within one (1) Business Day thereafter, to make
arrangements to purchase all, but not less than all, of the Defaulted
Certificates upon the terms herein set forth; if, however, the Non-Defaulting
Underwriter shall not have completed such arrangements within such one (1)
Business Day period, then this Agreement shall terminate without liability on
the part of the Non-Defaulting Underwriter.

                  No action taken pursuant to this Section 13 shall relieve the
defaulting Underwriter from liability in respect of its default.

                  In the event of any such default which does not result in a
termination of this Agreement, either the Non-Defaulting Underwriter or the
Company shall have the right to postpone the Closing Date for a period not
exceeding seven days in order to effect any required changes in the Registration
Statement or Prospectus or in any other documents or arrangements.

                  Section 14. Survival. The respective indemnities,
representations, warranties and agreements of the Company and the Underwriters
contained in this Agreement, or made by or on behalf of them, respectively,
pursuant to this Agreement, shall survive the delivery of and payment for the
Certificates and shall remain in full force and effect, regardless of any
investigation made by or on behalf of any of them or any person controlling any
of them.

                  Section 15. Definition of the Term "Business Day". For
purposes of this Agreement, "Business Day" means any day on which the New York
Stock Exchange, Inc. is open for trading.

                  Section 16. GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND SHALL BE
CONSTRUED IN ACCORDANCE WITH SUCH LAWS WITHOUT REGARD TO PRINCIPLES OF CONFLICTS
OF LAW, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

                  Section 17. Counterparts. This Agreement may be executed in
counterparts and, if executed in more than one counterpart, the executed
counterparts shall each be deemed to be an original but all such counterparts
shall together constitute one and the same instrument.

                  Section 18. Headings. The headings herein are inserted for
convenience of reference only and are not intended to be part of, or to affect
the meaning or interpretation of, this Agreement.

                  Section 19. Representations of Underwriters. The
Representative will act for the several Underwriters in connection with the
transactions contemplated by this Agreement, and



                                     - 27 -
<PAGE>   29


any action under this Agreement taken by the Representative will be binding upon
all of the Underwriters.












                                     - 28 -
<PAGE>   30


                  If the foregoing correctly sets forth the agreement between
the Company and the Underwriters, please indicate your acceptance in the space
provided for that purpose below.

                                                     Very truly yours,


                                                     ADVANTA MORTGAGE CONDUIT
                                                       SERVICES INC.



                                                     By: /s/ Michael Coco
                                                        ------------------------
                                                         Name:  Michael Coco
                                                         Title: Vice-President


CONFIRMED AND ACCEPTED, as of
the date first above written:


MORGAN STANLEY & CO. INCORPORATED
as Representative of the Underwriters



By: /s/ Valerie H. Kay
   ----------------------
    Name:  Valerie H. Kay
    Title: Vice President





                                     - 29 -
<PAGE>   31


<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------------
                                                    SCHEDULE A
- --------------------------------------------------------------------------------------------------------------------
                                                INITIAL PRINCIPAL
                                                AMOUNT OF OFFERED
                                                   CERTIFICATES                               PURCHASE PRICE TO
                      REQUIRED RATINGS             PURCHASED BY                           UNDERWRITERS DISREGARDING
      CLASS              S&P/MOODY'S               UNDERWRITERS              COUPON           ACCRUED INTEREST
- --------------------------------------------------------------------------------------------------------------------
<S>                   <C>                       <C>                         <C>           <C>
Class A-1                 AAA /Aaa                  $114,000,000            Floating(2)        $113,829,000.00
- --------------------------------------------------------------------------------------------------------------------
Class A-2                 AAA /Aaa                   $90,000,000              Fixed             $89,815,140.00
- --------------------------------------------------------------------------------------------------------------------
Class A-3                 AAA /Aaa                   $40,000,000              Fixed             $39,895,960.00
- --------------------------------------------------------------------------------------------------------------------
Class A-4                 AAA /Aaa                   $95,000,000              Fixed             $94,704,740.00
- --------------------------------------------------------------------------------------------------------------------
Class A-5                 AAA /Aaa                   $31,700,000              Fixed(1)          $31,572,217.30
- --------------------------------------------------------------------------------------------------------------------
Class A-6                 AAA /Aaa                   $41,000,000              Fixed(2)          $40,896,465.00
- --------------------------------------------------------------------------------------------------------------------
Class A-7                 AAA /Aaa                  $105,800,000            Floating(2)        $105,561,950.00
- --------------------------------------------------------------------------------------------------------------------
</TABLE>





- ----------

1    Class A-1, Class A-5 and Class A-6 are subject to the Fixed Rate Group
     Available Funds Cap Rate as defined in the Prospectus Supplement.

2    Class A-7 is subject to the ARM Group Available Funds Cap Rate as defined
     in the Prospectus Supplement.


                                     - 1 -
<PAGE>   32


                                   SCHEDULE I



Morgan Stanley & Co. Incorporated
Prudential Securities Incorporated
Salomon Smith Barney Inc.
















                                     - 2 -

<PAGE>   1

                                                                     EXHIBIT 4.1




<PAGE>   2

                                                                  Execution Copy




                         POOLING AND SERVICING AGREEMENT
                                   Relating to



                           ADVANTA MORTGAGE LOAN TRUST
                                     1999-2



                                      Among



                    ADVANTA MORTGAGE CONDUIT SERVICES, INC.,
                                   as Sponsor,



                           ADVANTA MORTGAGE CORP. USA,
                               as Master Servicer,



                                       and



                   BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                   as Trustee



                             Dated as of May 1, 1999



<PAGE>   3


                                TABLE OF CONTENTS
                         (Not a Part of this Agreement)

<TABLE>
<CAPTION>
                                                                                                       Page
<S>  <C>                                                                                               <C>
Parties..................................................................................................1
Recitals.................................................................................................1

ARTICLE I DEFINITIONS; RULES OF CONSTRUCTION.............................................................6

     Section 1.1.    Definitions.........................................................................6
     Section 1.2.    Captions; Table of Contents........................................................40
     Section 1.3.    Opinions...........................................................................40

ARTICLE II ESTABLISHMENT AND ORGANIZATION OF THE TRUST..................................................40

     Section 2.1.    Establishment of the Trust.........................................................40
     Section 2.2.    Office.............................................................................40
     Section 2.3.    Purposes and Powers................................................................41
     Section 2.4.    Appointment of the Trustee; Declaration of Trust...................................41
     Section 2.5.    Expenses of the Trust..............................................................41
     Section 2.6.    Ownership of the Trust.............................................................41
     Section 2.7.    Situs of the Trust.................................................................41
     Section 2.8.    Miscellaneous REMIC Provisions.....................................................41

ARTICLE III REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE SPONSOR AND THE MASTER SERVICER; COVENANT
                     OF SPONSOR TO CONVEY MORTGAGE LOANS................................................45

     Section 3.1.    Representations and Warranties of the Sponsor......................................45
     Section 3.2.    Representations and Warranties of the Master Servicer..............................47
     Section 3.3.    Representations and Warranties of the Sponsor with Respect to the Mortgage Loans...49
     Section 3.4.    Covenants of Sponsor to Take Certain Actions with Respect to the Mortgage Loans In
                        Certain Situations..............................................................50
     Section 3.5.    Conveyance of the Mortgage Loans...................................................53
     Section 3.6.    Acceptance by Trustee; Certain Substitutions of Mortgage Loans; Certification by
                        Trustee.........................................................................56
     Section 3.7.    Cooperation Procedures.............................................................58
     Section 3.8.    Conveyance of the Subsequent Mortgage Loans........................................58

ARTICLE IV ISSUANCE AND SALE OF CERTIFICATES............................................................60

     Section 4.1.    Issuance of Certificates...........................................................60
     Section 4.2.    Sale of Certificates...............................................................60

ARTICLE V CERTIFICATES AND TRANSFER OF INTERESTS........................................................60

     Section 5.1.    Terms..............................................................................60
     Section 5.2.    Forms..............................................................................61
     Section 5.3.    Execution, Authentication and Delivery.............................................61
     Section 5.4.    Registration and Transfer of Certificates..........................................61
     Section 5.5.    Mutilated, Destroyed, Lost or Stolen Certificates..................................63
     Section 5.6.    Persons Deemed Owners..............................................................64
     Section 5.7.    Cancellation.......................................................................64
     Section 5.8.    Limitation on Transfer of Ownership Rights.........................................64
     Section 5.9.    Assignment of Rights...............................................................65
</TABLE>

                                       2
<PAGE>   4


<TABLE>
<S>  <C>                                                                                               <C>
ARTICLE VI COVENANTS....................................................................................65

     Section 6.1.    Distributions......................................................................65
     Section 6.2.    Money for Distributions to be Held in Trust; Withholding...........................66
     Section 6.3.    Protection of Trust Estate.........................................................66
     Section 6.4.    Performance of Obligations.........................................................67
     Section 6.5.    Negative Covenants.................................................................67
     Section 6.6.    No Other Powers....................................................................68
     Section 6.7.    Limitation of Suits................................................................68
     Section 6.8.    Unconditional Rights of Owners to Receive Distributions............................69
     Section 6.9.    Rights and Remedies Cumulative.....................................................69
     Section 6.10.   Delay or Omission Not Waiver.......................................................69
     Section 6.11.   Control by Owners..................................................................69

ARTICLE VII ACCOUNTS, DISBURSEMENTS AND RELEASES........................................................70

     Section 7.1.    Collection of Money................................................................70
     Section 7.2.    Establishment of Accounts..........................................................70
     Section 7.3.    The Certificate Insurance Policy...................................................70
     Section 7.4.    Pre-Funding Account and Capitalized Interest Account...............................71
     Section 7.5.    Flow of Funds......................................................................72
     Section 7.6.    Investment of Accounts.............................................................76
     Section 7.7.    Eligible Investments...............................................................77
     Section 7.8.    Reports by Trustee.................................................................78
     Section 7.9.    Additional Reports by Trustee......................................................81
     Section 7.10.   Supplemental Interest Payment Account and Supplemental Interest Payments...........81

ARTICLE VIII SERVICING AND ADMINISTRATION OF MORTGAGE LOANS.............................................82

     Section 8.1.    Master Servicer and Sub-Servicers..................................................82
     Section 8.2.    Collection of Certain Mortgage Loan Payments.......................................84
     Section 8.3.    Sub-Servicing Agreements Between Master Servicer and Sub-Servicers.................85
     Section 8.4.    Successor Sub-Servicers............................................................85
     Section 8.5.    Liability of Master Servicer.......................................................85
     Section 8.6.    No Contractual Relationship Between Sub-Servicer and Trustee or the Owners.........85
     Section 8.7.    Assumption or Termination of Sub-Servicing Agreement by Trustee....................85
     Section 8.8.    Principal and Interest Account.....................................................86
     Section 8.9.    Delinquency Advances, Compensating Interest and Servicing Advances.................88
     Section 8.10.   Purchase of Mortgage Loans.........................................................89
     Section 8.11.   Maintenance of Insurance...........................................................89
     Section 8.12.   Due-on-Sale Clauses; Assumption and Substitution Agreements........................90
     Section 8.13.   Realization Upon Defaulted Mortgage Loans..........................................91
     Section 8.14.   Trustee to Cooperate; Release of Files.............................................92
     Section 8.15.   Servicing Compensation.............................................................93
     Section 8.16.   Annual Statement as to Compliance..................................................93
     Section 8.17.   Annual Independent Certified Public Accountants' Reports...........................94
     Section 8.18.   Access to Certain Documentation and Information Regarding the Mortgage Loans.......94
     Section 8.19.   Assignment of Agreement............................................................94
     Section 8.20.   Removal of Master Servicer; Resignation of Master Servicer.........................94
     Section 8.21.   Inspections by the Certificate Insurer and the Trustee; Errors and Omissions
                        Insurance.......................................................................98
</TABLE>


                                       3
<PAGE>   5

<TABLE>
<S>  <C>                                                                                               <C>
     Section 8.22.   Merger, Conversion, Consolidation or Succession to Business of Master Servicer.....98
     Section 8.23.   Notices of Material Events.........................................................99

ARTICLE IX TERMINATION OF TRUST.........................................................................99

     Section 9.1.    Termination of Trust...............................................................99
     Section 9.2.    Clean-Up Call Termination.........................................................100
     Section 9.3.    Termination Upon Loss of REMIC Status.............................................101
     Section 9.4.    Disposition of Proceeds...........................................................102
     Section 9.5.    Netting of Amounts................................................................102

ARTICLE X THE TRUSTEE..................................................................................102

     Section 10.1.   Certain Duties and Responsibilities...............................................102
     Section 10.2.   Removal of Trustee for Cause......................................................104
     Section 10.3.   Certain Rights of the Trustee.....................................................105
     Section 10.4.   Not Responsible for Recitals or Issuance of Certificates..........................106
     Section 10.5.   May Hold Certificates.............................................................106
     Section 10.6.   Money Held in Trust...............................................................106
     Section 10.7.   No Lien for Fees..................................................................106
     Section 10.8.   Corporate Trustee Required; Eligibility...........................................106
     Section 10.9.   Resignation and Removal; Appointment of Successor.................................106
     Section 10.10.  Acceptance of Appointment by Successor Trustee....................................108
     Section 10.11.  Merger, Conversion, Consolidation or Succession to Business of the Trustee........108
     Section 10.12.  Reporting; Withholding............................................................108
     Section 10.13.  Liability of the Trustee..........................................................109
     Section 10.14.  Appointment of Co-Trustee or Separate Trustee.....................................109

ARTICLE XI MISCELLANEOUS...............................................................................110

     Section 11.1.   Compliance Certificates and Opinions..............................................110
     Section 11.2.   Form of Documents Delivered to the Trustee........................................111
     Section 11.3.   Acts of Owners....................................................................111
     Section 11.4.   Notices, etc., to Trustee.........................................................112
     Section 11.5.   Notices and Reports to Owners; Waiver of Notices..................................112
     Section 11.6.   Rules by Trustee and Sponsor......................................................112
     Section 11.7.   Successors and Assigns............................................................112
     Section 11.8.   Severability......................................................................113
     Section 11.9.   Benefits of Agreement.............................................................113
     Section 11.10.  Legal Holidays....................................................................113
     Section 11.11.  Governing Law.....................................................................113
     Section 11.12.  Counterparts......................................................................113
     Section 11.13.  Usury.............................................................................113
     Section 11.14.  Amendment.........................................................................114
     Section 11.15.  REMIC Status; Taxes...............................................................115
     Section 11.16.  Additional Limitation on Action and Imposition of Tax.............................116
     Section 11.17.  Appointment of Tax Matters Person.................................................117
     Section 11.18.  The Certificate Insurer...........................................................117
     Section 11.19.  Maintenance of Records............................................................117
     Section 11.20.  Notices...........................................................................117
</TABLE>


                                       4
<PAGE>   6


SCHEDULE I        --   Schedules of Mortgage Loans

EXHIBIT A  --  Form of Certificates
EXHIBIT B  --  Form of Notice of Establishment of Principal and Interest Account
EXHIBIT C  --  Form of Trustee's Acknowledgement of Receipt
EXHIBIT D  --  Form of Certification
EXHIBIT E  --  Form of Delivery Order
EXHIBIT F  --  Form of Class R/RL Tax Matters Transfer Certificate
EXHIBIT G  --  Power of Attorney
EXHIBIT H  --  Form of Monthly Report
EXHIBIT I  --  Form of Master Servicer's Trust Receipt
EXHIBIT J  --  Form of Subsequent Transfer Agreement
EXHIBIT K  --  Form of Lost Note Affidavit






                                       5
<PAGE>   7

                  POOLING AND SERVICING AGREEMENT, relating to ADVANTA MORTGAGE
LOAN TRUST 1999-2, dated as of May 1, 1999, by and among ADVANTA MORTGAGE
CONDUIT SERVICES, INC., a Delaware corporation, in its capacity as sponsor of
the trust created pursuant to this Agreement (the "Sponsor"), ADVANTA MORTGAGE
CORP. USA, a Delaware corporation, in its capacity as master servicer (the
"Master Servicer"), and BANKERS TRUST COMPANY OF CALIFORNIA, N.A., a national
banking association, in its capacity as trustee (the "Trustee").

                  WHEREAS, the Sponsor wishes to establish a trust, and to
provide for the allocation and sale of the beneficial interests therein and the
maintenance and distribution of the trust estate;

                  WHEREAS, the Master Servicer has agreed to service the
Mortgage Loans, which constitute the principal assets of the trust estate;

                  WHEREAS, all things necessary to make the Certificates (as
defined herein), when executed and authenticated by the Trustee valid
instruments, and to make this Agreement a valid agreement, in accordance with
their and its terms, have been done;

                  WHEREAS, Bankers Trust Company of California, N.A. is willing
to serve in the capacity of Trustee hereunder; and

                  WHEREAS, Ambac Assurance Corporation (the "Certificate
Insurer") is intended to be a third-party beneficiary of this Agreement and is
hereby recognized by the parties hereto to be a third-party beneficiary of this
Agreement.

                  NOW, THEREFORE, in consideration of the premises and the
mutual agreements herein contained, the Sponsor, the Master Servicer and the
Trustee hereby agree as follows:

                                   ARTICLE I

                       DEFINITIONS; RULES OF CONSTRUCTION

                  SECTION 1.1. DEFINITIONS. For all purposes of this Agreement,
the following terms shall have the meanings set forth below, unless the context
clearly indicates otherwise:

                  "Accepted Servicing Practices": The Master Servicer's normal
servicing practices in servicing and administering mortgage loans for its own
account, which in general will conform to the mortgage servicing practices of
prudent mortgage lending institutions which service for their own account
mortgage loans of the same type as the Mortgage Loans in the jurisdictions in
which the related Properties are located.

                  "Account": Any account established in accordance with Sections
7.2, 7.4, 7.10 or 8.8 hereof each of which shall be established at a Designated
Depository Institution.

                  "Accrual Period": On any Payment Date, (x) with respect to the
Class A-2, A-3, A-4, A-5 and A-6 Certificates, the immediately preceding
calendar month and (y) with respect to the Class A-1 and Class A-7 Certificates,
the period commencing on the immediately preceding Payment Date (or the Startup
Day in the case of the first Payment Date) to and including the day prior to the
current Payment Date. Calculations of interest on the Class A-2, A-3, A-4, A-5
and



                                       6
<PAGE>   8


A-6 Certificates will be made on the basis of a 360-day year consisting of
twelve thirty-day months and calculations of interest on the Class A-1 and Class
A-7 Certificates will be made on the basis of the actual number of days elapsed
in the related Accrual Period in a year of 360 days.

                  "Addition Notice": With respect to the transfer of Subsequent
Mortgage Loans to the Trust pursuant to Section 3.8(b) of this Agreement,
notice, which shall be given not later than two Business Days prior to the
related Subsequent Transfer Date, of the Sponsor's designation of Subsequent
Mortgage Loans to be sold to the Trust, such notice shall include the
approximate aggregate Loan Balance and the approximate weighted average Coupon
Rate of such Subsequent Mortgage Loans.

                  "Advanta Mortgage Files": For any Mortgage Loan identified on
the related Schedule of Mortgage Loans with an "A" code, the items listed below:

                  (a) the original Note, or , if such Note is lost, a certified
copy thereof along with a Lost Note Affidavit in the form of Exhibit K hereto,
bearing all intervening endorsements, endorsed either (i) "Pay to the order of
Bankers Trust Company of California, N.A., as custodian or trustee under the
applicable custody or trust agreement, without recourse" or (ii) "Pay to the
order of Bankers Trust Company of California, N.A., as custodian or trustee
under the applicable custody or trust agreement, without recourse, Advanta
Mortgage Corp. USA as Master Servicer," or (iii) "Pay to the order of Bankers
Trust Company of California, N.A., as custodian or trustee" by [Seller,
signature, name, title] and signed in the name of the previous owner by an
authorized officer (in the event that the Mortgage Loan was acquired by the
previous owner in a merger the signature must be in the following form: "[the
previous owner], successor by merger to [name of predecessor]", in the event
that the Mortgage Loan was acquired or originated while doing business under
another name, the signature must be in the following form: "[the previous
owner], formerly known as [previous name]" or (iv) "Pay to the order of Bankers
Trust Company of California, N.A., without recourse" or (v) "Pay to the order of
_______________, without recourse". The original Note should be accompanied by
any rider made in connection with the origination of the related Mortgage Loan;

                  (b) the original of any guarantee executed in connection with
the Note (if any);

                  (c) the original Mortgage with evidence of recording thereon
or copies certified by the related recording office or, if the original Mortgage
has not yet been returned from the recording office, a certified copy of the
Mortgage;

                  (d) the originals of any assumption, modification,
consolidation or extension agreements;

                  (e) the originals of all intervening assignments of Mortgage,
showing a complete chain of assignment from origination to the related Seller,
including warehousing assignments, with evidence of recording thereon (or, if an
original intervening assignment has not been returned from the recording office,
a certified copy thereof); and

                  (f) any assignment of Mortgages required to be delivered under
Section 3.5(c)(i) or 3.5(c)(ii) hereunder.

                  "Affiliated Originators": Advanta Mortgage Corp. USA, a
Delaware corporation, Advanta Bank Corp., a Utah industrial loan corporation,
Advanta Mortgage Corp. Midatlantic, a



                                       7
<PAGE>   9


Pennsylvania corporation, Advanta Mortgage Corp. Midatlantic II, a Pennsylvania
corporation, Advanta Mortgage Corp. Midwest, a Pennsylvania corporation, Advanta
Mortgage Corp. Northeast, a New York corporation, Advanta National Bank, a
national banking association, Advanta Finance Corp., a Nevada corporation.

                  "Aggregate Certificate Principal Balance": As of any date of
determination thereof, the sum of the then Outstanding Certificate Principal
Balance of the Class A Certificates.

                  "Agreement": This Pooling and Servicing Agreement, as it may
be amended from time to time, and including the Exhibits hereto.

                  "AMHC": Advanta Mortgage Holding Company, a Delaware
corporation and the corporate parent of Advanta Mortgage Corp. USA, and the
indirect corporate parent of Advanta Mortgage Conduit Services, Inc.

                  "Appraised Value": The appraised value of any Property based
upon the appraisal or other valuation made at the time of the origination of the
related Mortgage Loan, or, in the case of a Mortgage Loan which is a purchase
money mortgage, the sales price of the Property at such time of origination, if
such sales price is less than such appraised value.

                  "ARM Group Available Funds Cap Rate": As of any Payment Date,
an amount, expressed as a per annum rate, and calculated on the basis of a
360-day year and the actual number of days elapsed in the related Remittance
Period, equal to (a) the sum of (i) the aggregate amount of interest accrued and
collected (or advanced) at the Coupon Rates on all of the Mortgage Loans in the
Group II Pool for the related Remittance Period minus (ii) the aggregate of the
Servicing Fee, the Premium Amount and the Trustee's Fee, in each case relating
to the Group II Pool, on such Payment Date, and minus (iii) commencing on the
seventh Payment Date following the Startup Day, an amount equal to 0.75% per
annum times the aggregate principal balance of the Mortgage Loans in Group II as
of the beginning of such related Remittance Period, divided by (b) the aggregate
principal balance of the Mortgage Loans in Group II as of the beginning of the
related Remittance Period.

                  "Authorized Officer": (A) With respect to any Person, any
person who is authorized to act for such Person in matters relating to this
Agreement, and whose action is binding upon such Person and (B) with respect to
the Trustee, the Sponsor and the Master Servicer, those individuals whose names
appear on the lists of Authorized Officers delivered on the Startup Day, which
lists may be amended or supplemented from time to time.

                  "Available Funds": Group I Available Funds or Group II
Available Funds.

                  "Available Funds Cap Rate": The Fixed Rate Group Available
Funds Cap Rate or the ARM Group Available Funds Cap Rate, as applicable.

                  "Available Funds Shortfall": As defined in Section
7.5(b)(D)(1) hereof.

                  "Balance Ratio": As defined in Section 2.8(b) hereof.

                  "Balloon Loan": Any Mortgage Loan which has an amortization
schedule which extends beyond its maturity date, resulting in a relatively large
unamortized principal balance due in a single payment at maturity.



                                       8
<PAGE>   10


                  "Benefit Plan Entity": As defined in Section 5.8(b) hereof.

                  "Business Day": Any day that is not a Saturday, Sunday or
other day on which the Certificate Insurer, the Master Servicer, the Sponsor or
the Trustee is closed or commercial banking institutions in the States of New
York, Delaware or California are authorized or obligated by law or executive
order to be closed.

                  "Capitalized Interest Account": The Capitalized Interest
Account established in accordance with Section 7.2 hereof and maintained by the
Trustee.

                  "Certificate": Any one of the Class A Certificates, the Class
B Certificates, the Class BS Certificates, the Class R Certificates and the
Class RL Certificates, each representing the interests and the rights described
in this Agreement.

                  "Certificate Account": The Certificate Account established in
accordance with Section 7.2 hereof and maintained by the Trustee.

                  "Certificate Insurance Policy": The certificate guaranty
insurance policy No. AB0263BE dated June 3, 1999 issued by the Certificate
Insurer to the Trustee for the benefit of the Owners of the Class A
Certificates.

                  "Certificate Insurer": Ambac Assurance Corporation, a
Wisconsin-domiciled stock insurance corporation, or any successor thereto.

                  "Certificate Insurer Default": Any one of the following events
shall have occurred and be continuing:

                  (a) The Certificate Insurer shall have failed to make a
payment required under the Certificate Insurance Policy;

                  (b) The Certificate Insurer shall have (i) filed a petition or
commenced any case or proceeding under any provision or chapter of the United
States Bankruptcy Code or any other similar Federal or state law relating to
insolvency, bankruptcy, rehabilitation, liquidation or reorganization, (ii) made
a general assignment for the benefit of its creditors, or (iii) had an order for
relief entered against it under the United States Bankruptcy Code or any other
similar Federal or state law relating to insolvency, bankruptcy, rehabilitation,
liquidation or reorganization which is final and nonappealable; or

                  (c) A court of competent jurisdiction, the New York Department
of Insurance, or other competent regulatory authority shall have entered a final
and nonappealable order, judgment or decree (i) appointing a custodian, trustee,
agent or receiver for the Certificate Insurer or for all or any material portion
of its property or (ii) authorizing the taking of possession by a custodian,
trustee, agent or receiver of the Certificate Insurer (or the taking of
possession of all or any material portion of the property of the Certificate
Insurer).

                  "Certificate Principal Balance": With respect to any Class A
Certificate as of any date of determination, the Original Certificate Principal
Balance less any principal amounts actually distributed on such Class A
Certificates pursuant to Sections 7.5(b)(E) and 7.5(b)(F) hereof on all prior
Payment Dates; provided, however, that solely for the purposes of determining
the Certificate Insurer's rights, as subrogee, the Certificate Principal Balance
shall not be reduced by any principal amounts paid to the Owners thereof from
Insured Payments. The Class B



                                       9
<PAGE>   11


Certificate, the Class BS Certificate, the Class R Certificate, the Class RL
Certificate and each Supplemental Interest Right do not have a Certificate
Principal Balance.

                  "Civil Relief Act": The Soldiers and Sailors' Civil Relief Act
of 1940, as amended from time to time.

                  "Civil Relief Act Shortfalls": Interest shortfalls resulting
from the application of the Civil Relief Act.

                  "Class": Any Class of the Class A Certificates, the Class B
Certificates, the Class BS Certificate, the Class R Certificates or the Class RL
Certificates.

                  "Class A Certificate": Any one of the Class A-1 Certificates,
the Class A-2 Certificates, the Class A-3 Certificates, the Class A-4
Certificates, the Class A-5 Certificates, the Class A-6 Certificates or the
Class A-7 Certificates.

                  "Class A Current Interest": With respect to any Payment Date,
the Class A-1 Current Interest, the Class A-2 Current Interest, the Class A-3
Current Interest, the Class A-4 Current Interest, the Class A-5 Current
Interest, the Class A-6 Current Interest or the Class A-7 Current Interest.

                  "Class A Distribution Amount": The sum of the Class A-1
Distribution Amount, the Class A-2 Distribution Amount, the Class A-3
Distribution Amount, the Class A-4 Distribution Amount, the Class A-5
Distribution Amount, the Class A-6 Distribution Amount and the Class A-7
Distribution Amount.

                  "Class A Interest Carry Forward Amount": With respect to any
Payment Date, the Class A-1 Interest Carry Forward Amount, the Class A-2
Interest Carry Forward Amount, the Class A-3 Interest Carry Forward Amount, the
Class A-4 Interest Carry Forward Amount, the Class A-5 Interest Carry Forward
Amount, the Class A-6 Interest Carry Forward Amount or the Class A-7 Interest
Carry Forward Amount.

                  "Class A-1 Certificate": Any one of the Certificates
designated on the face thereof as a Class A-1 Certificate, substantially in the
form annexed hereto as Exhibit A-1, authenticated and delivered by the Trustee,
representing the right to distributions as set forth herein.

                  "Class A-1 Certificate Principal Balance": As of any date of
determination, the Original Certificate Principal Balance of all Class A-1
Certificates less any principal amounts actually distributed with respect to the
Class A-1 Certificates pursuant to Section 7.5(b)(F) hereof on all prior Payment
Dates.

                  "Class A-1 Current Interest": With respect to any Payment
Date, the amount of interest accrued on the Class A-1 Certificate Principal
Balance immediately prior to such Payment Date during the related Accrual Period
at the Class A-1 Pass-Through Rate; provided, that such amount will be reduced
by the Class A-1 Certificates' pro rata share of any Civil Relief Act Shortfalls
relating to Group I during the related Remittance Period.

                  "Class A-1 Distribution Amount": With respect to any Payment
Date, the sum of (x) the Class A-1 Current Interest, (y) the Class A-1 Interest
Carry Forward Amount, if any, and



                                       10
<PAGE>   12


(z) the Group I Class A Principal Distribution Amount payable to the Owners of
Class A-1 Certificates pursuant to Section 7.5(b)(F) hereof.

                  "Class A-1 Interest Carry Forward Amount": With respect to any
Payment Date, the sum of (x) the amount, if any, by which (i) the sum of (A) the
Class A-1 Current Interest as of the immediately preceding Payment Date and (B)
any unpaid Class A-1 Interest Carry Forward Amount, as calculated up through the
previous Payment Date and outstanding on such immediately preceding Payment
Date, exceeds (ii) the amount of the actual distribution with respect to
interest, including the payment of any related Supplemental Interest Amount,
made to the Owners of the Class A-1 Certificates on such immediately preceding
Payment Date and (y) interest on such amount at the Class A-1 Pass-Through Rate
calculated on the basis of the actual number of days in the related Accrual
Period and a year of 360 days.

                  "Class A-1 Pass-Through Rate": The Class A-1 Pass-Through Rate
will be equal to, with respect to any Payment Date, the lesser of (i) LIBOR plus
0.10% per annum and (ii) the Fixed Rate Group Available Funds Cap Rate for such
Payment Date.

                  "Class A-2 Certificate": Any one of the Certificates
designated on the face thereof as a Class A-2 Certificate, substantially in the
form annexed hereto as Exhibit A-2, authenticated and delivered by the Trustee,
representing the right to distributions as set forth herein.

                  "Class A-2 Certificate Principal Balance": As of any date of
determination, the Original Certificate Principal Balance of all Class A-2
Certificates less any principal amounts actually distributed with respect to the
Class A-2 Certificates pursuant to Section 7.5(b)(F) hereof on all prior Payment
Dates.

                  "Class A-2 Current Interest": With respect to any Payment
Date, the amount of interest accrued on the Class A-2 Certificate Principal
Balance immediately prior to such Payment Date during the related Accrual Period
at the Class A-2 Pass-Through Rate; provided, that such amount will be reduced
by the Class A-2 Certificates' pro rata share of any Civil Relief Act Shortfalls
relating to Group I during the related Remittance Period.

                  "Class A-2 Distribution Amount": With respect to any Payment
Date, the sum of (x) the Class A-2 Current Interest, (y) the Class A-2 Interest
Carry Forward Amount, if any, and (z) the Group I Class A Principal Distribution
Amount payable to the Owners of Class A-2 Certificates pursuant to Section
7.5(b)(F) hereof.

                  "Class A-2 Interest Carry Forward Amount": With respect to any
Payment Date, the sum of (x) the amount, if any, by which (i) the sum of (A) the
Class A-2 Current Interest as of the immediately preceding Payment Date and (B)
any unpaid Class A-2 Interest Carry Forward Amount, as calculated up through the
previous Payment Date and outstanding on such immediately preceding Payment
Date, exceeds (ii) the amount of the actual distribution with respect to
interest made to the Owners of the Class A-2 Certificates on such immediately
preceding Payment Date and (y) 30 days' interest on such amount at the Class A-2
Pass-Through Rate.

                  "Class A-2 Pass-Through Rate": The Class A-2 Pass-Through Rate
will be equal to, with respect to any Payment Date, 6.32% per annum


                                       11
<PAGE>   13


                  "Class A-3 Certificate": Any one of the Certificates
designated on the face thereof as a Class A-3 Certificate, substantially in the
form annexed hereto as Exhibit A-3, authenticated and delivered by the Trustee,
representing the right to distributions as set forth herein.

                  "Class A-3 Certificate Principal Balance": As of any date of
determination, the Original Certificate Principal Balance of all Class A-3
Certificates less any principal amounts actually distributed with respect to the
Class A-3 Certificates pursuant to Section 7.5(b)(F) hereof on all prior Payment
Dates.

                  "Class A-3 Current Interest": With respect to any Payment
Date, the amount of interest accrued on the Class A-3 Certificate Principal
Balance immediately prior to such Payment Date during the related Accrual Period
at the Class A-3 Pass-Through Rate; provided, that such amount will be reduced
by the Class A-3 Certificates' pro rata share of any Civil Relief Act Shortfalls
relating to Group I during the related Remittance Period.

                  "Class A-3 Distribution Amount": With respect to any Payment
Date, the sum of (x) the Class A-3 Current Interest, (y) the Class A-3 Interest
Carry Forward Amount, if any, and (z) the Group I Class A Principal Distribution
Amount payable to the Owners of Class A-3 Certificates pursuant to Section
7.5(b)(F) hereof.

                  "Class A-3 Interest Carry Forward Amount": With respect to any
Payment Date, the sum of (x) the amount, if any, by which (i) the sum of (A) the
Class A-3 Current Interest as of the immediately preceding Payment Date and (B)
any unpaid Class A-3 Interest Carry Forward Amount, as calculated up through the
previous Payment Date and outstanding on such immediately preceding Payment
Date, exceeds (ii) the amount of the actual distribution with respect to
interest made to the Owners of the Class A-3 Certificates on such immediately
preceding Payment Date and (y) 30 days' interest on such amount at the Class A-3
Pass-Through Rate.

                  "Class A-3 Pass-Through Rate": The Class A-3 Pass-Through Rate
will be equal to, with respect to any Payment Date, 6.44% per annum

                  "Class A-4 Certificate": Any one of the Certificates
designated on the face thereof as a Class A-4 Certificate, substantially in the
form annexed hereto as Exhibit A-4, authenticated and delivered by the Trustee,
representing the right to distributions as set forth herein.

                  "Class A-4 Certificate Principal Balance": As of any date of
determination, the Original Certificate Principal Balance of all Class A-4
Certificates less any principal amounts actually distributed with respect to the
Class A-4 Certificates pursuant to Section 7.5(b)(F) hereof on all prior Payment
Dates.

                  "Class A-4 Current Interest": With respect to any Payment
Date, the amount of interest accrued on the Class A-4 Certificate Principal
Balance immediately prior to such Payment Date during the related Accrual Period
at the Class A-4 Pass-Through Rate; provided, that such amount will be reduced
by the Class A-4 Certificates' pro rata share of any Civil Relief Act Shortfalls
relating to Group I during the related Remittance Period.

                  "Class A-4 Distribution Amount": With respect to any Payment
Date, the sum of (x) the Class A-4 Current Interest, (y) the Class A-4 Interest
Carry Forward Amount, if any, and



                                       12
<PAGE>   14


(z) the Group I Class A Principal Distribution Amount payable to the Owners of
Class A-4 Certificates pursuant to Section 7.5(b)(F) hereof.

                  "Class A-4 Interest Carry Forward Amount": With respect to any
Payment Date, the sum of (x) the amount, if any, by which (i) the sum of (A) the
Class A-4 Current Interest as of the immediately preceding Payment Date and (B)
any unpaid Class A-4 Interest Carry Forward Amount, as calculated up through the
previous Payment Date and outstanding on such immediately preceding Payment
Date, exceeds (ii) the amount of the actual distribution with respect to
interest made to the Owners of the Class A-4 Certificates on such immediately
preceding Payment Date and (y) 30 days' interest on such amount at the Class A-4
Pass-Through Rate.

                  "Class A-4 Pass-Through Rate": The Class A-4 Pass-Through Rate
will be equal to, with respect to any Payment Date, 6.89% per annum.

                  "Class A-5 Certificate": Any one of the Certificates
designated on the face thereof as a Class A-5 Certificate, substantially in the
form annexed hereto as Exhibit A-5, authenticated and delivered by the Trustee,
representing the right to distributions as set forth herein.

                  "Class A-5 Certificate Principal Balance": As of any date of
determination, the Original Certificate Principal Balance of all Class A-5
Certificates less any principal amounts actually distributed with respect to the
Class A-5 Certificates pursuant to Section 7.5(b)(F) hereof on all prior Payment
Dates.

                  "Class A-5 Current Interest": With respect to any Payment
Date, the amount of interest accrued on the Class A-5 Certificate Principal
Balance immediately prior to such Payment Date during the related Accrual Period
at the Class A-5 Pass-Through Rate; provided, that such amount will be reduced
by the Class A-5 Certificates' pro rata share of any Civil Relief Act Shortfalls
relating to Group I during the related Remittance Period.

                  "Class A-5 Distribution Amount": With respect to any Payment
Date, the sum of (x) the Class A-5 Current Interest, (y) the Class A-5 Interest
Carry Forward Amount, if any, and (z) the Group I Class A Principal Distribution
Amount payable to the Owners of Class A-5 Certificates pursuant to Section
7.5(b)(F) hereof.

                  "Class A-5 Interest Carry Forward Amount": With respect to any
Payment Date, the sum of (x) the amount, if any, by which (i) the sum of (A) the
Class A-5 Current Interest as of the immediately preceding Payment Date and (B)
any unpaid Class A-5 Interest Carry Forward Amount, as calculated up through the
previous Payment Date and outstanding on such immediately preceding Payment
Date, exceeds (ii) the amount of the actual distribution with respect to
interest made to the Owners of the Class A-5 Certificates on such immediately
preceding Payment Date and (y) 30 days' interest on such amount at the Class A-5
Pass-Through Rate.

                  "Class A-5 Pass-Through Rate": The Class A-5 Pass-Through Rate
will be equal to the lesser of (x)(i) with respect to any Payment Date which
occurs on or prior to the Step-Up Payment Date, 7.15% per annum, or (ii) with
respect to any Payment Date thereafter, 7.90% per annum and (y) the Fixed Rate
Group Available Funds Cap Rate for such Payment Date.



                                       13
<PAGE>   15


                  "Class A-6 Certificate": Any one of the Certificates
designated on the face thereof as a Class A-6 Certificate, substantially in the
form annexed hereto as Exhibit A-6, authenticated and delivered by the Trustee,
representing the right to distributions as set forth herein.

                  "Class A-6 Certificate Principal Balance": As of any date of
determination, the Original Certificate Principal Balance of all Class A-6
Certificates less any principal amounts actually distributed with respect to the
Class A-6 Certificates pursuant to Section 7.5(b)(F) hereof on all prior Payment
Dates.

                  "Class A-6 Current Interest": With respect to any Payment
Date, the amount of interest accrued on the Class A-6 Certificate Principal
Balance immediately prior to such Payment Date during the related Accrual Period
at the Class A-6 Pass-Through Rate; provided, that such amount will be reduced
by the Class A-6 Certificates' pro rata share of any Civil Relief Act Shortfalls
relating to Group I during the related Remittance Period.

                  "Class A-6 Distribution Amount": With respect to any Payment
Date, the sum of (x) the Class A-6 Current Interest, (y) the Class A-6 Interest
Carry Forward Amount, if any, and until the Class A-6 Certificate Principal
Balance has been reduced to zero, (z) Class A-6 Principal Distribution Amount
payable to the Owners of the Class A-6 Certificates pursuant to Section
7.5(b)(F).

                  "Class A-6 Interest Carry Forward Amount": With respect to any
Payment Date, the sum of (x) the amount, if any, by which (i) the sum of (A) the
Class A-6 Current Interest as of the immediately preceding Payment Date and (B)
any unpaid Class A-6 Interest Carry Forward Amount, as calculated up through the
previous Payment Date and outstanding on such immediately preceding Payment
Date, exceeds (ii) the amount of the actual distribution with respect to
interest made to the Owners of the Class A-6 Certificates on such immediately
preceding Payment Date and (y) 30 days' interest on such amount at the Class A-6
Pass-Through Rate.

                  "Class A-6 Pass-Through Rate": The Class A-6 Pass-Through Rate
will be equal to, with respect to any Payment Date, the lesser of (x) 6.82% per
annum and (y) the Fixed Rate Group Available Funds Cap Rate for such Payment
Date.

                  "Class A-6 Principal Distribution Amount": With respect to any
Payment Date will be: the "applicable percentage" set forth below of the Class
A-6 Pro Rata Principal Distribution Amount with respect to such Payment Date:

               PERIOD                             APPLICABLE PERCENTAGE
               ------                             ---------------------
          June 1999 - May 2002                            0.00%
          June 2002 - May 2004                           45.00%
          June 2004 - May 2005                           80.00%
          June 2005 - May 2006                          100.00%
          June 2006 - and thereafter                    300.00%

                  "Class A-6 Pro Rata Principal Distribution Amount": With
respect to any Payment Date, an amount equal to the product of (x) the Group I
Class A Principal Distribution Amount for such Payment Date and (y) a fraction,
the numerator of which is the Class A-6



                                       14
<PAGE>   16


Certificate Principal Balance of the Class A-6 Certificates immediately prior to
such Payment Date and the denominator of which is the aggregate Certificate
Principal Balance of all Classes of the Group I Certificates immediately prior
to such Payment Date.

                  "Class A-7 Certificate": Any one of the Certificates
designated on the face thereof as a Class A-7 Certificate, substantially in the
form annexed hereto as Exhibit A-7, authenticated and delivered by the Trustee,
representing the right to distributions as set forth herein.

                  "Class A-7 Certificate Principal Balance": As of any date of
determination, the Original Certificate Principal Balance of all Class A-7
Certificates less any principal amounts actually distributed with respect to the
Class A-7 Certificates pursuant to Section 7.5(b)(F) hereof on all prior Payment
Dates.

                  "Class A-7 Current Interest": With respect to any Payment
Date, the amount of interest accrued on the Class A-7 Certificate Principal
Balance immediately prior to such Payment Date during the related Accrual Period
at the Class A-7 Pass-Through Rate; provided, that such amount will be reduced
by the Class A-7 Certificates' pro rata share of any Civil Relief Act Shortfalls
relating to Group II during the related Remittance Period.

                  "Class A-7 Distribution Amount": With respect to any Payment
Date, the sum of (x) the Class A-7 Current Interest, (y) the Class A-7 Interest
Carry Forward Amount, if any, and (z) the Group II Class A Principal
Distribution Amount payable to the Owners of Class A-7 Certificates pursuant to
Section 7.5(b)(F) hereof.

                  "Class A-7 Interest Carry Forward Amount": With respect to any
Payment Date, the sum of (x) the amount, if any, by which (i) the sum of (A) the
Class A-7 Current Interest as of the immediately preceding Payment Date and (B)
any unpaid Class A-7 Interest Carry Forward Amount, as calculated up through the
previous Payment Date and outstanding on such immediately preceding Payment
Date, exceeds (ii) the amount of the actual distribution with respect to
interest, including the payment of any related Supplemental Interest Amount,
made to the Owners of the Class A-7 Certificates on such immediately preceding
Payment Date and (y) interest on such amount at the Class A-7 Pass-Through Rate
calculated on the basis of the actual number of days in the related Accrual
Period and a year of 360 days.

                  "Class A-7 Pass-Through Rate": The Class A-7 Pass-Through Rate
will be equal to the lesser of (i)(a) with respect to any Payment Date which
occurs on or prior to the Step-Up Payment Date, LIBOR plus 0.22% per annum or
(b) with respect to any Payment Date thereafter, LIBOR plus 0.44% per annum and
(ii) the ARM Group Available Funds Cap Rate for such Payment Date.

                  "Class B Certificate": Any one of the Certificates designated
on the face thereof as a Class B Certificate, substantially in the form annexed
hereto as Exhibit A-B, authenticated and delivered by the Trustee, representing
the right to distributions as set forth herein. The Class B Certificates
represent a class of "regular interests" in the Upper-Tier REMIC.

                  "Class B Distribution Amount": With respect to any Payment
Date, the amount payable to Class B pursuant to footnotes 4 and 5 of Section
2.8(c).

                  "Class B Pass-Through Rate": With respect to any Payment Date,
the interest payable at the Group I Net Weighted Average Coupon Rate and the
Group II Net Weighted



                                       15
<PAGE>   17


Average Coupon Rate on the Group I and Group II Mortgage Loans in excess of the
interest payable on the Class A Certificates, expressed as a per annum rate on
the aggregate Loan Balance of the Mortgage Loans in Group I and Group II.

                  "Class BS Certificate": Any one of the Certificates designated
on the face thereof as a Class BS Certificate, substantially in the form annexed
hereto as Exhibit A-BS, authenticated and delivered by the Trustee, representing
the right to distributions as set forth herein.

                  "Class R Certificate": Any one of the Certificates designated
on the face thereof as a Class R Certificate, substantially in the form annexed
hereto as Exhibit A-R, authenticated and delivered by the Trustee, representing
the right to distributions as set forth herein, and evidencing an interest
designated as the "residual interest" in the Upper-Tier REMIC for the purposes
of the REMIC Provisions.

                  "Class RL Certificate": Any one of the Certificates designated
on the face thereof as a Class RL Certificate, substantially in the form annexed
hereto as Exhibit A-RL, authenticated and delivered by the Trustee, representing
the right to receive distributions as set forth herein, and evidencing an
interest designated as the "residual interest" in the Lower-Tier REMIC for the
purposes of the REMIC Provisions.

                  "Clean-Up Call Date": The Payment Date after the Initial
Clean-Up Call Date on which the Redeeming Party elects to exercise its right to
purchase all of the Mortgage Loans pursuant to Section 9.2 hereof.

                  "Code": The Internal Revenue Code of 1986, as amended and any
successor statute.

                  "Combined Loan-to-Value Ratio": With respect to any First
Mortgage Loan, the percentage equal to the Original Principal Amount of the
related Note divided by the Appraised Value of the related Property and with
respect to any Junior Mortgage Loan, the percentage equal to (a) the sum of (i)
the remaining principal balance of the Senior Lien note(s), as of the date of
origination of the Junior Mortgage Loan, as appropriate, and (ii) the Original
Principal Amount of the related Note of such Junior Mortgage Loan, as
appropriate, divided by (b) the Appraised Value.

                  "Commitment": The Commitment to issue a Certificate Guaranty
Insurance Policy dated June 3, 1999 and issued by the Certificate Insurer.

                  "Compensating Interest": The amount defined in Section 8.9(b)
hereof.

                  "Conduit Mortgage Files": For any Mortgage Loan identified on
the related Schedule of Mortgage Loans with a "B" code, the items listed below:

                  (a) the original Note, or , if such Note is lost, a certified
copy thereof along with a Lost Note Affidavit in the form of Exhibit K hereto,
bearing all intervening endorsements, endorsed either (i) "Pay to the order of
Bankers Trust Company of California, N.A., as custodian or trustee under the
applicable custody or trust agreement, without recourse" or (ii) "Pay to the
order of Bankers Trust Company of California, N.A., as custodian or trustee
under the applicable custody or trust agreement, without recourse, Advanta
Mortgage Corp. USA as Master Servicer," or (iii) "Pay to the order of Bankers
Trust Company of California, N.A., as custodian or trustee"



                                       16
<PAGE>   18


by [Seller, signature, name, title] and signed in the name of the previous owner
by an authorized officer (in the event that the Mortgage Loan was acquired by
the previous owner in a merger the signature must be in the following form:
"[the previous owner], successor by merger to [name of predecessor]", in the
event that the Mortgage Loan was acquired or originated while doing business
under another name, the signature must be in the following form: "[the previous
owner], formerly known as [previous name]" or (iv) "Pay to the order of Bankers
Trust Company of California, N.A., without recourse" or (v) "Pay to the order of
______________, without recourse". The original Note should be accompanied by
any rider made in connection with the origination of the related Mortgage Loan;

                  (b) the original of any guarantee executed in connection with
the Note (if any);

                  (c) the original Mortgage with evidence of recording thereon
or copies certified by the related recording office or, if the original Mortgage
has not yet been returned from the recording office, a certified copy of the
Mortgage;

                  (d) the originals of any assumption, modification,
consolidation or extension agreements;

                  (e) the original assignment of Mortgage of each Mortgage Loan
to "Bankers Trust Company of California, N.A., as custodian or trustee",
"Bankers Trust Company of California, N.A. as trustee or custodian on behalf of
the Advanta Mortgage Conduit Services Inc.", "Bankers Trust Company of
California, N.A., as trustee" or "Pay to the Order of ____________________." In
the event that the Mortgage Loan was acquired by the previous owner in a merger,
the assignment of Mortgage must be by the "(previous owner), successor by merger
to (names of predecessor)"; and in the event that the Mortgage Loan was acquired
or originated by the previous owner while doing business under another name, the
Assignment of Mortgage must be by the "(previous owner), formerly known as
(previous name)";

                  (f) the originals of any intervening assignments of Mortgage,
showing a complete chain of assignment from origination to the related Seller,
including warehousing assignments, with evidence of recording thereon (or, if an
original intervening assignment has not been returned from the recording office,
a certified copy thereof); and

                  (g) any assignment of Mortgages required to be delivered under
Section 3.5(c)(i) or 3.5(c)(ii) hereunder.

                  "Control Party": Until the last sentence of Section 11.18
hereof is applicable and so long as no Certificate Insurer Default has occurred
and is continuing, the Certificate Insurer, and thereafter, the Trustee.

                  "Coupon Rate":  The rate of interest borne by each Note.

                  "Current Interest": With respect to any Payment Date, the sum
of the Class A-1 Current Interest, the Class A-2 Current Interest, the Class A-3
Current Interest, the Class A-4 Current Interest, the Class A-5 Current
Interest, the Class A-6 Current Interest and the Class A-7 Current Interest.

                  "Date of Payment Loan": Any Mortgage Loan as to which,
pursuant to the Note relating thereto, interest is computed and charged to the
Mortgagor at the Coupon Rate on the



                                       17
<PAGE>   19


outstanding principal balance of such Note based on the number of days elapsed
between receipt of the Mortgagor's last payment through receipt of the
Mortgagor's most current payment.

                  "Definitive Certificate": Certificates issued in definitive
form without coupons.

                  "Delinquency Advance": The amount defined in Section 8.9(a)
hereof.

                  "Delinquent": A Mortgage Loan is "delinquent" if any payment
due thereon is not made by the close of business on the day such payment is
scheduled to be due. A Mortgage Loan is "30 days delinquent" if such payment has
not been received by the close of business on the corresponding day of the month
immediately succeeding the month in which such payment was due, or, if there is
no such corresponding day (e.g., as when a 30-day month follows a 31-day month
in which a payment was due on the 31st day of such month) then on the last day
of such immediately succeeding month. Similarly for "60 days delinquent," "90
days delinquent" and so on.

                  "Delivery Order": The delivery order in the form set forth as
Exhibit E hereto and delivered by the Sponsor to the Trustee on the Startup Day
pursuant to Section 4.1 hereof.

                  "Depository": The Depository Trust Company, 7 Hanover Square,
New York, New York 10004 and any successor Depository hereafter named.

                  "Designated Depository Institution": With respect to each
Account, an institution whose deposits are insured by the Bank Insurance Fund or
the Savings Association Insurance Fund of the FDIC, the long-term deposits of
which shall be rated A2 or better by Moody's or A or better by Standard & Poor's
and the short-term deposits of which shall be rated P-1 or better by Moody's and
A-1 or better by Standard & Poor's, unless otherwise approved in writing by the
Trustee, the Certificate Insurer, Moody's and Standard & Poor's, and which is
any of the following: (i) a federal savings and loan association duly organized,
validly existing and in good standing under the federal banking laws, (ii) an
institution duly organized, validly existing and in good standing under the
applicable banking laws of any state, (iii) a national banking association duly
organized, validly existing and in good standing under the federal banking laws,
(iv) a principal subsidiary of a bank holding company, or (v) approved in
writing by the Trustee, the Certificate Insurer, Moody's and Standard & Poor's;
provided, however, that any such institution or association shall have combined
capital, surplus and undivided profits of at least $100,000,000. Notwithstanding
the foregoing, an Account may be held by an institution otherwise meeting the
preceding requirements except that the only applicable rating requirement shall
be that the unsecured and uncollateralized debt obligations thereof shall be
rated Baa3 or better by Moody's or BBB or better by Standard & Poor's if such
institution has trust powers and such Account is held by such institution in its
corporate trust department.

                  "Designated Residual Owner": Advanta Finance Residual
Corporation.

                  "Determination Date": As to each Payment Date, the third
Business Day preceding such Payment Date or such earlier day as shall be agreed
to by the Certificate Insurer and the Trustee.

                  "Direct Participant" or "DTC Participant": Any broker-dealer,
bank or other financial institution for which the Depository holds Class A
Certificates from time to time as a securities depository.


                                       18
<PAGE>   20


                  "Disqualified Organization": Shall have the meaning set forth
from time to time in the definition thereof at Section 860E(e)(5) of the Code
(or any successor statute thereto) and applicable to the Trust.

                  "Document Delivery Requirements": The Sponsor's obligations to
deliver certain legal documents, to prepare and record certain Mortgage
assignments or to deliver certain opinions relating to Mortgage assignments, in
each case with respect to the Mortgage Loans and as set forth in Section 3.5
hereof.

                  "Eligible Investments": Those investments so designated
pursuant to Section 7.7 hereof.

                  "Event of Default": Any event described in clauses (a) or (b)
of Section 8.20 hereof.

                  "Fannie Mae": The Federal National Mortgage Association, a
federally-chartered and privately-owned corporation existing under the Federal
National Mortgage Association Charter Act, as amended, or any successor thereof.

                  "FDIC": The Federal Deposit Insurance Corporation, or any
successor thereto.

                  "Final Determination": As defined in Section 9.3(a) hereof.

                  "First Mortgage Loan": A Mortgage Loan which constitutes a
first priority mortgage lien with respect to any Property.

                  "Fixed Rate Group Available Funds Cap Rate": As of any Payment
Date, an amount, expressed as a per annum rate, equal to (A)(i) the aggregate
amount of interest accrued and collected (or advanced) at the Coupon Rates on
all of the Mortgage Loans in the Group I Pool for the related Remittance Period
minus (ii) the aggregate of the Servicing Fee, the Premium Amount and the
Trustee's Fee, in each case relating to Group I on such Payment Date, divided by
(B) the aggregate outstanding principal balance of the Mortgage Loans in Group I
as of the beginning of the related Remittance Period, calculated (x) with
respect to the Class A-1 Certificates, on the basis of a 360-day year and the
actual number of days in the related Accrual Period, and (y) with respect to the
Class A-5 and A-6 Certificates, on the basis of a 360-day year consisting of
twelve thirty-day months.

                  "Formula Pass-Through Rate": With respect to the Class A-1 and
the Class A-7 Certificates, the interest rate resulting from the calculation set
forth in clause (i) in the definition of the Class A-1 Pass-Through Rate and the
Class A-7 Pass-Through Rate, respectively.

                  "Freddie Mac": The Federal Home Loan Mortgage Corporation, a
corporate instrumentality of the United States created pursuant to the Emergency
Home Finance Act of 1970, as amended, or any successor thereof.

                  "Gross Margin": With respect to each Mortgage Loan with an
adjustable Coupon Rate, the fixed percentage amount set forth in the related
Mortgage Note which amount is added to the Index in accordance with the terms of
the related Mortgage Note to determine, on each Interest Rate Adjustment Date,
the Coupon Rate for such Mortgage Loan, subject to any maximum.


                                       19
<PAGE>   21


                  "Group":  Group I or Group II.

                  "Group Distribution Amount": As defined in Section 7.5(b)(F)
hereof;

                  "Group I" or "Group I Pool": The fixed pool of Mortgage Loans
identified in the related Schedule of Mortgage Loans as having been assigned to
Group I, including any Qualified Replacement Mortgages delivered in replacement
thereof and assigned to Group I.

                  "Group I Available Funds": As defined in Section 7.3(a)
hereof.

                  "Group I Capitalized Interest Deposit":  $192,583.70.

                  "Group I Capitalized Interest Requirement": As to any Payment
Date occurring during the Pre-Funding Period, the difference, if any, between
(x) the Group I Interest Distribution Amount for such Payment Date plus the
Premium Amount relating to the Group I Certificates and the Trustee's Fee
relating to the Group I Certificates as of such Payment Date and (y) the sum of
(i) the Group I Interest Remittance Amount as of such Payment Date, and (ii) any
Pre-Funding Earnings to be transferred to the Certificate Account on such
Payment Date pursuant to Section 7.4 hereof.

                  "Group I Certificates": The Class A-1 Certificates, the Class
A-2 Certificates, the Class A-3 Certificates, the Class A-4 Certificates, the
Class A-5 Certificates and the Class A-6 Certificates.

                  "Group I Class A Principal Distribution Amount": With respect
to the Group I Certificates, as of any Payment Date, the lesser of:

                  (a)   the Group I Available Funds, plus any related Insured
                        Payment and minus the Group I Interest Distribution
                        Amount, and

                  (b)   (i)   the sum, without duplication of:

                        (A)   the principal actually collected by the Master
                              Servicer with respect to the Mortgage Loans in the
                              Group I Pool during the related Remittance Period;

                        (B)   the Loan Balance of each Mortgage Loan in the
                              Group I Pool that either was repurchased by the
                              Sponsor or an Originator or purchased by the
                              Master Servicer or any Sub-Servicer on the Group I
                              Pool on the related Remittance Date, to the extent
                              such Loan Balance is actually received by the
                              Trustee;

                        (C)   any Substitution Amounts delivered by the Sponsor
                              or an Originator on the related Remittance Date in
                              connection with a substitution of a Mortgage Loan
                              in the Group I Pool, to the extent such
                              Substitution Amounts are actually received by the
                              Trustee;

                        (D)   all Net Liquidation Proceeds actually collected by
                              the Master Servicer with respect to the Mortgage
                              Loans in the Group I Pool



                                       20
<PAGE>   22


                              during the related Remittance Period (to the
                              extent such Net Liquidation Proceeds relate to
                              principal);

                        (E)   the amount of any Overcollateralization Deficit
                              with respect to the Group I Pool for such Payment
                              Date;

                        (F)   the proceeds received by the Trustee from any
                              termination of the Group I Pool (to the extent
                              such proceeds relate to principal);

                        (G)   any amounts remaining in the Pre-Funding Account
                              at the end of the Pre-Funding Period;

                        (H)   the amount of any Overcollateralization Increase
                              Amount with respect to the Group I Pool for such
                              Payment Date to the extent of any Net Monthly
                              Excess Cashflow available for such purpose;

                              minus

                        (ii)  the amount of any Overcollateralization Reduction
                              Amount with respect to Group I Pool for such
                              Payment Date.

                  In no event will the Group I Class A Principal Distribution
Amount for any class of Class A Certificates on any Payment Date (x) be less
than zero or (y) be greater than the then-outstanding principal balance of the
related class of Class A Certificates.

                  "Group I Deficiency Amount": The excess, if any, of the Group
I Required Distributions over the Group I Net Available Distribution Amount.

                  "Group I Insured Payment": An amount equal to the sum of (a)
as of any Payment Date, the Group I Deficiency Amount and (b) any unpaid Group I
Preference Amount (without duplication).

                  "Group I Interest Amount Available": As of any Payment Date,
the Group I Interest Remittance Amount less the sum of the portion of the
Trustee's Fees related to Group I and the Premium Amount related to Group I for
such Payment Date.

                  "Group I Interest Distribution Amount": As of any Payment
Date, the sum of (i) the Class A-1 Current Interest, Class A-2 Current Interest,
Class A-3 Current Interest, Class A-4 Current Interest, Class A-5 Current
Interest and Class A-6 Current Interest and (ii) any Class A-1 Interest
Carry-Forward Amount, Class A-2 Interest Carry Forward Amount, Class A-3
Interest Carry Forward Amount, Class A-4 Interest Carry Forward Amount, Class
A-5 Interest Carry Forward Amount and Class A-6 Interest Carry Forward Amount.

                  "Group I Interest Remittance Amount": As of any Remittance
Date with respect to the Mortgage Loans in Group I, the sum, without
duplication, of (i) all interest accrued during the related Remittance Period
(less the Servicing Fee with respect to such Mortgage Loans) and actually
collected prior to such Remittance Date, (ii) all Delinquency Advances and all
Special Advances made by the Master Servicer on such Remittance Date, (iii) all
Compensating Interest paid by the Master Servicer on such Remittance Date, net
of amounts allowed to be retained pursuant to Section 8.8(c), (iv) without
duplication, the portion of the Loan Purchase Price and the Substitution Amount
relating to accrued interest on the Mortgage Loans in Group I, (v) the



                                       21
<PAGE>   23


portion of any Net Liquidation Proceeds relating to accrued and unpaid interest
with respect to Group I and (vi) the proceeds of any liquidation of the Trust
Estate related to Group I (to the extent such proceeds relate to interest and
Group I).

                  "Group I Monthly Excess Cash Flow Amount": For any Payment
Date, the sum of (x) the Group I Monthly Excess Interest Amount and (y) the
Group I Overcollateralization Reduction Amount for such Payment Date.

                  "Group I Monthly Excess Interest Amount": With respect to any
Payment Date, the excess, if any, of (i) the Group I Interest Amount Available
for the related Remittance Period over (ii) the Group I Interest Distribution
Amount on such Payment Date.

                  "Group I Monthly Remittance Amount": As of any Remittance
Date, the sum of (i) the Group I Interest Remittance Amount for such Remittance
Date and (ii) the Group I Principal Remittance Amount for such Remittance Date.

                  "Group I Net Available Distribution Amount": As defined in
Section 7.3(a) hereof.

                  "Group I Net Weighted Average Coupon Rate": With respect to
any Payment Date, the weighted average of the Coupon Rates of the Mortgage Loans
in Group I (weighted by the Loan Balances of the Mortgage Loans in Group I),
less the sum of (A) 0.75% per annum, (B) the Trustee Fee Rate related to Group
I, and (C) the fraction, expressed as a percentage, (i) the numerator of which
is equal to the product of (x) twelve and (y) the Premium Amount for the related
Payment Date with respect to the Class A-1, A-2, A-3, A-4, A-5, and A-6
Certificates and (ii) the denominator of which is equal to the aggregate Loan
Balances of the Mortgage Loans in Group I.

                  "Group I Original Balance": The sum of (x) the aggregate
principal balances of the Initial Mortgage Loans in Group I as of the Initial
Cut-Off Date, which equals $372,463,932.96 and (y) the Group I Original
Pre-Funded Amount, which sum is $411,700,000.00.

                  "Group I Original Pre-Funded Amount": The amount deposited in
the Pre-Funding Account on the Startup Day from the proceeds of the sale of the
Group I Certificates, which amount is $39,236,067.04.

                  "Group I Overcollateralization Amount": As of any Payment
Date, the amount, if any, by which (x) the aggregate Loan Balance of the
Mortgage Loans in Group I as of the close of business on the last day of the
immediately preceding Remittance Period plus amount on deposit in the
Pre-Funding Account as of the close of business on the last day of the
immediately preceding Remittance Period exceeds (y) the aggregate Certificate
Principal Balance of the Group I Certificates after taking into account all
distributions of principal on such Group I Certificates as of such Payment Date
(except for any payment to be made as to principal from the proceeds of the
Certificate Insurance Policy).

                  "Group I Overcollateralization Deficiency Amount": With
respect to any Payment Date, the excess, if any, of (x) the Group I Specified
Overcollateralization Amount for such Payment Date over (y) the Group I
Overcollateralization Amount for such Payment Date.


                                       22
<PAGE>   24


                  "Group I Overcollateralization Deficit": With respect to any
Payment Date, the amount, if any, by which (x) the aggregate Certificate
Principal Balance of the Group I Certificates, after taking into account all
distributions to be made on such Payment Date (except for any payment to be made
as to principal from the proceeds of the Certificate Insurance Policy), exceeds
(y) the sum of (i) aggregate principal balance of the Mortgage Loans in the
Group I Pool as of the close of business on the last day of the preceding
Remittance Period, plus (ii) any amounts remaining in the Pre-Funding Account as
of the close of business on the last day of the related Remittance Period.

                  "Group I Overcollateralization Increase Amount": Any Net
Monthly Excess Cashflow actually applied as an accelerated payment of principal
with respect to Group I.

                  "Group I Overcollateralization Reduction Amount": As of any
Payment Date, the lesser of (x) the Group I Principal Remittance Amount for such
Payment Date and (y) the excess of (i) the Group I Overcollateralization Amount
for such Payment Date, over (ii) the Group I Specified Overcollateralization
Amount for such Payment Date.

                  "Group I Pre-Funded Amount": With respect to any Determination
Date, the amount on deposit in the Pre-Funding Account relating to Group I and
available for the purchase of the Subsequent Mortgage Loans to be conveyed to
the Group I Pool.

                  "Group I Preference Amount": Any amount previously distributed
to an Owner of the Group I Certificates that is recoverable and sought to be
recovered as a voidable preference by a trustee in bankruptcy pursuant to the
United States Bankruptcy Code (11 U.S.C.), as amended from time to time, in
accordance with a final nonappealable order of a court having competent
jurisdiction.

                  "Group I Principal Remittance Amount": As of any Remittance
Date, the sum, without duplication, of (i) the principal actually collected by
the Master Servicer with respect to Mortgage Loans in Group I during the related
Remittance Period, (ii) the Loan Balance of each Mortgage Loan in Group I that
was purchased from the Trust on or prior to such Remittance Date, to the extent
such Loan Balance was actually deposited in the Principal and Interest Account,
(iii) any Substitution Amounts relating to principal delivered by the Sponsor in
connection with a substitution of a Mortgage Loan in Group I, to the extent such
principal portion of the Substitution Amounts were actually deposited in the
Principal and Interest Account on such Remittance Date, (iv) any Net Liquidation
Proceeds relating to principal actually collected by the Master Servicer with
respect to such Mortgage Loans in Group I during the related Remittance Period
net of amounts allowed to be retained pursuant to Section 8.8(c), and (v) the
proceeds of any liquidation of the Trust Estate related to Group I (to the
extent such proceeds related to principal).

                  "Group I Reimbursement Amount": As of any Payment Date, the
sum of (x)(i) all Group I Insured Payments previously received by the Trustee
and all Group I Preference Amounts previously paid by the Certificate Insurer
and in each case not previously repaid to the Certificate Insurer pursuant to
Section 7.5(b)(D)(3) and (4) hereof plus (ii) interest accrued on each such
Group I Insured Payment not previously repaid calculated from the date the
Trustee received the related Group I Insured Payment at the Late Payment Rate
applicable to such date and (y)(i) any other amounts then due and owing to the
Certificate Insurer relating to the Group I Certificates under the Insurance
Agreement plus (ii) interest on such amounts at the Late Payment Rate, if
applicable. On each Determination Date, the Certificate Insurer shall notify the
Trustee



                                       23
<PAGE>   25


and the Sponsor of the amount of any Group I Reimbursement Amount if such amount
is greater than zero.

                  "Group I Required Distributions": As to the Group I
Certificates, the sum of (a) as of any Payment Date, the sum of (x) the Group I
Interest Distribution Amount for such Payment Date and (y) the Group I
Overcollateralization Deficit, if any, as of such Payment Date and (b) the Group
I Preference Amount.

                  "Group I Specified Overcollateralization Amount": The
Specified Overcollateralization Amount with respect to Group I.

                  "Group II" or "Group II Pool": The pool of adjustable rate
Mortgage Loans identified in the related Schedule of Mortgage Loans as having
been assigned to Group II, including any Qualified Replacement Mortgages
delivered in replacement thereof and assigned to Group II.

                  "Group II Available Funds": As defined in Section 7.3(a)
hereof.

                  "Group II Certificates": The Class A-7 Certificates.

                  "Group II Class A Principal Distribution Amount": With respect
to the Group II Certificates, as of any Payment Date, the lesser of:

                  (a)   the Group II Available Funds, plus any related Insured
                        Payment and minus the Group II Interest Distribution
                        Amount, and

                  (b)   (i)   the sum, without duplication of:

                        (A)   the principal actually collected by the Master
                              Servicer with respect to the Mortgage Loans in the
                              Group II Pool during the related Remittance
                              Period;

                        (B)   the Loan Balance of each Mortgage Loan in the
                              Group II Pool that either was repurchased by the
                              Sponsor or an Originator or purchased by the
                              Master Servicer or any Sub-Servicer on the Group
                              II Pool on the related Remittance Date, to the
                              extent such Loan Balance is actually received by
                              the Trustee;

                        (C)   any Substitution Amounts delivered by the Sponsor
                              or an Originator on the related Remittance Date in
                              connection with a substitution of a Mortgage Loan
                              in the Group II Pool, to the extent such
                              Substitution Amounts are actually received by the
                              Trustee;

                        (D)   all Net Liquidation Proceeds actually collected by
                              the Master Servicer with respect to the Mortgage
                              Loans in the Group II Pool during the related
                              Remittance Period (to the extent such Net
                              Liquidation Proceeds relate to principal);

                        (E)   the amount of any Overcollateralization Deficit
                              with respect to the Group II Pool for such Payment
                              Date;


                                       24
<PAGE>   26


                        (F)   the proceeds received by the Trustee from any
                              termination of the Group II Pool (to the extent
                              such proceeds relate to principal);

                        (G)   [Reserved];

                        (H)   the amount of any Overcollateralization Increase
                              Amount with respect to Group II Pool for such
                              Payment Date to the extent of any Net Monthly
                              Excess Cashflow available for such purpose;

                              minus

                        (ii)  the amount of any Overcollateralization Reduction
                              Amount with respect to Group II Pool for such
                              Payment Date.

                  In no event will the Group II Principal Distribution Amount
for any Class A-7 Certificates on any Payment Date (x) be less than zero or (y)
be greater than the then-outstanding principal balance of the Class A-7
Certificates.

                  "Group II Deficiency Amount": The excess, if any, of the Group
II Required Distributions over the Group II Net Available Distribution Amount.

                  "Group II Insured Payment": An amount equal to the sum of (a)
as of any Payment Date, the Group II Deficiency Amount and (b) any unpaid Group
II Preference Amount (without duplication).

                  "Group II Interest Amount Available": As of any Payment Date,
the Group II Interest Remittance Amount less the sum of the portion of the
Trustee's Fees related to Group II and the Premium Amount related to Group II
for such Payment Date.

                  "Group II Interest Distribution Amount": As of any Payment
Date, the sum of (i) the Class A-7 Current Interest and (ii) any Class A-7
Interest Carry-Forward Amount.

                  "Group II Interest Remittance Amount": As of any Remittance
Date with respect to the Mortgage Loans in Group II, the sum, without
duplication, of (i) interest accrued during the related Remittance Period (less
the Servicing Fee with respect to such Mortgage Loans) and actually collected
prior to such Remittance Date, (ii) all Delinquency Advances and all Special
Advances made by the Master Servicer on such Remittance Date, (iii) all
Compensating Interest paid by the Master Servicer on such Remittance Date, net
of amounts allowed to be retained pursuant to Section 8.8(c), (iv) without
duplication, the portion of the Loan Purchase Price and the Substitution Amount
relating to interest accrued on the Mortgage Loans in Group II and (v) the
portion of any Net Liquidation Proceeds relating to accrued and unpaid interest
with respect to Group II and (vi) the proceeds of any liquidation of the Trust
Estate related to Group II (to the extent such proceeds relate to interest and
Group II).

                  "Group II Monthly Excess Cashflow Amount": For any Payment
Date, the sum of (x) the Group II Monthly Excess Interest Amount and (y) the
Group II Overcollateralization Reduction Amount for such Payment Date.

                  "Group II Monthly Excess Interest Amount": With respect to any
Payment Date, the excess, if any, of (i) the Group II Interest Amount Available
for the related Remittance Period over (ii) the Group II Interest Distribution
Amount on such Payment Date.


                                       25
<PAGE>   27


                  "Group II Monthly Remittance Amount": As of any Remittance
Date, the sum of (i) the Group II Interest Remittance Amount for such Remittance
Date and (ii) the Group II Principal Remittance Amount for such Remittance Date.

                  "Group II Net Available Distribution Amount": As defined in
Section 7.3(a) hereof.

                  "Group II Net Weighted Average Coupon Rate": With respect to
any Payment Date, the weighted average of the Coupon Rates of the Mortgage Loans
in Group II(weighted by the Loan Balances of the Mortgage Loans in Group II),
less the sum of (A) 0.75% per annum, (B) the Trustee Fee Rate related to Group
II and (C) the fraction, expressed as a percentage, (i) the numerator of which
is equal to the product of (x) twelve and (y) the Premium Amount for the related
Payment Date with respect to the Class A-7 Certificates and (ii) the denominator
of which is equal to the aggregate Loan Balances of the Mortgage Loans in Group
II.

                  "Group II Original Balance": The sum of the aggregate
principal balances of the Mortgage Loans in Group II as of the Initial
Cut-Off-Date, which sum is $105,822,287.04.

                  "Group II Overcollateralization Amount": As of any Payment
Date, the difference between (x) the aggregate Loan Balance of the Mortgage
Loans in Group II as of the close of business on the last day of the immediately
preceding Remittance Period and (y) the aggregate Certificate Principal Balance
of the Group II Certificates after taking into account all distributions of
principal on such Group II Certificates as of such Payment Date (except for any
payment to be made as to principal from the proceeds of the Certificate
Insurance Policy).

                  "Group II Overcollateralization Deficiency Amount": With
respect to any Payment Date, the excess, if any, of (x) the Group II Specified
Overcollateralization Amount for such Payment Date over (y) the Group II
Overcollateralization Amount for such Payment Date.

                  "Group II Overcollateralization Deficit": With respect to any
Payment Date, the amount, if any, by which (x) the aggregate Certificate
Principal Balance of the Group II Certificates, after taking into account all
distributions to be made on such Payment Date (except for any payment to be made
as to principal from the proceeds of the Certificate Insurance Policy), exceeds
(y) the aggregate principal balance of the Mortgage Loans in the Group II Pool
as of the close of business on the last day of the preceding Remittance Period.

                  "Group II Overcollateralization Increase Amount": Any Net
Monthly Excess Cashflow actually applied as an accelerated payment of principal
with respect to Group II.

                  "Group II Overcollateralization Reduction Amount": As of any
Payment Date, the lesser of (x) the Group II Principal Remittance Amount for
such Payment Date and (y) the excess of (i) the Group II Overcollateralization
Amount for such Payment Date, over (ii) the Group II Specified
Overcollateralization Amount for such Payment Date.

                  "Group II Preference Amount": Any amount previously
distributed to an Owner on the Group II Certificates that is recoverable and
sought to be recovered as a voidable preference by a trustee in bankruptcy
pursuant to the United States Bankruptcy Code (11 U.S.C.), as amended from time
to time, in accordance with a final nonappealable order of a court having
competent jurisdiction.


                                       26
<PAGE>   28


                  "Group II Principal Remittance Amount": As of any Remittance
Date, the sum, without duplication, of (i) the principal actually collected by
the Master Servicer with respect to Mortgage Loans in Group II during the
related Remittance Period, (ii) the Loan Balance of each Mortgage Loan in Group
II that was purchased from the Trust on or prior to such Remittance Date, to the
extent such Loan Balance was actually deposited in the Principal and Interest
Account, (iii) any Substitution Amounts relating to principal delivered by the
Sponsor in connection with a substitution of a Mortgage Loan in Group II, to the
extent such principal portion of the Substitution Amounts were actually
deposited in the Principal and Interest Account on such Remittance Date, (iv)
any Net Liquidation Proceeds relating to principal actually collected by the
Master Servicer with respect to such Mortgage Loans in Group II during the
related Remittance Period net of amounts allowed to be retained pursuant to
Section 8.8(c), and (v) the proceeds of any liquidation of the Trust Estate
related to Group II (to the extent such proceeds related to principal).

                  "Group II Reimbursement Amount": As of any Payment Date, the
sum of (x)(i) all Group II Insured Payments previously received by the Trustee
not previously repaid to the Certificate Insurer pursuant to Section
7.5(b)(D)(3) and (4) hereof plus (ii) interest accrued on each such Group II
Insured Payment not previously repaid calculated from the date the Trustee
received the related Group II Insured Payment at the Late Payment Rate
applicable to such date and (y)(i) any other amounts then due and owing to the
Certificate Insurer relating to the Group II Certificates under the Insurance
Agreement plus (ii) interest on such amounts at the Late Payment Rate, if
applicable. On each Determination Date, the Certificate Insurer shall notify the
Trustee and the Sponsor of the amount of any Group II Reimbursement Amount if
such amount is greater than zero.

                  "Group II Required Distributions": As to the Group II
Certificates, the sum of (a) as of any Payment Date, the sum of (x) the Group II
Interest Distribution Amount for such Payment Date and (y) the Group II
Overcollateralization Deficit, if any, as of such Payment Date and (b) the Group
II Preference Amount.

                  "Group II Specified Overcollateralization Amount": The
Specified Overcollateralization Amount with respect to Group II.

                  "Indemnification Agreement": The Indemnification Agreement
dated as of May 26, 1999 among the Certificate Insurer and the Underwriters as
may be amended from time to time.

                  "Index": With respect to any adjustable rate Note, the
applicable index set forth therein.

                  "Indirect Participant" shall mean any financial institution
for whom any Direct Participant holds an interest in a Class A Certificate.

                  "Initial Clean-Up Call Date": The first Payment Date following
the date on which the aggregate Loan Balances of all Mortgage Loans has declined
to 10% or less of the aggregate principal balance of all of the Mortgage Loans
acquired by the Trust as of the Startup Day and acquired by the Trust prior to
the end of the Pre-Funding Period.

                  "Initial Cut-Off Date": The date as of which Initial Mortgage
Loans are transferred and assigned to the Trust, which date shall be the opening
of business on May 1, 1999.


                                       27
<PAGE>   29


                  "Initial Mortgage Loans" shall mean Mortgage Loans conveyed,
or caused to be conveyed, to the Trust by the Sponsor on the Startup Day.

                  "Insurance Agreement": The Insurance and Indemnity Agreement
dated as of June 3, 1999 between the Sponsor, the Master Servicer, the Trustee
and the Certificate Insurer, as it may be amended from time to time.

                  "Insured Amount": With respect to any Payment Date, the Group
I Deficiency Amount and the Group II Deficiency Amount for such Payment Date.

                  "Insured Payment": The Group I Insured Payment and the Group
II Insured Payment.

                  "Interest Determination Date": With respect to any Payment
Date for the Class A-1 and Class A-7 Certificates, the second London Business
Day preceding the Accrual Period relating to such Payment Date or with respect
to the June 1999 Payment Date, the second London Business Day preceding the
Startup Day.

                  "Interest Rate Adjustment Date": The date on which an
adjustment to the Coupon Rate on a Note becomes effective.

                  "Junior Mortgage Loan": A Mortgage Loan which constitutes a
junior priority mortgage lien with respect to the related Property.

                  "Late Payment Rate": The rate defined in the Insurance
Agreement.

                  "LIBOR": With respect to any Accrual Period for the Class A-1
and Class A-7 Certificates, the rate determined by the Trustee on the related
Interest Determination Date on the basis of the London interbank offered rate
for one-month U.S. dollar deposits, as such rates appear on Telerate Screen
3750, as of 11:00 a.m. (London time) on such Interest Determination Date.

                  On each Interest Determination Date, LIBOR for the related
Accrual Period for the A-1 and Class A-7 Certificates will be established by the
Trustee as follows:

                  (a) If on such Interest Determination Date two or more
Reference Banks provide such offered quotations, LIBOR for the related Accrual
Period for the Class A-1 and Class A-7 Certificates shall be the arithmetic mean
of such offered quotations (rounded to the nearest whole multiple of 1/16%).

                  (b) If on such Interest Determination Date fewer than two
Reference Banks provide such offered quotations, LIBOR for the related Accrual
Period for the Class A-1 and Class A-7 Certificates shall be the higher of (x)
LIBOR as determined on the previous Interest Determination Date and (y) the
Reserve Interest Rate.

                  The establishment of LIBOR on each Interest Distribution Date
by the Trustee and the Trustee's calculation of the rate of interest applicable
to the Class A-1 and Class A-7 Certificates for the related Accrual Period shall
(in the absence of manifest error) be final and binding.


                                       28
<PAGE>   30


                  "Liquidated Loan": A Mortgage Loan with respect to which the
related property has been acquired, liquidated or foreclosed and with respect to
which the Master Servicer determines that all Liquidation Proceeds which it
expects to recover from or on account of such Mortgage Loan have been recovered.
A Mortgage Loan which is purchased from the Trust pursuant to Section 3.3, 3.4,
3.6(b) or 8.10 hereof is not a "Liquidated Loan".

                  "Liquidation Expenses": Expenses which are incurred by the
Master Servicer or any Sub-Servicer in connection with the liquidation of any
defaulted Mortgage Loan, such expenses, including, without limitation, legal
fees and expenses, and any unreimbursed Servicing Advances expended by the
Master Servicer or any Sub-Servicer pursuant to Section 8.9 with respect to the
related Mortgage Loan.

                  "Liquidation Proceeds": With respect to any Liquidated Loan,
any amounts (including the proceeds of any Mortgage Insurance Policy) recovered
by the Master Servicer in connection with such Liquidated Loan, whether through
trustee's sale, foreclosure sale or otherwise, including payments in connection
with such Liquidated Loan received from the related Mortgagor, other than the
amounts required to be paid to the Mortgagor pursuant to the terms of the
applicable Mortgage or to be applied otherwise pursuant to law.

                  "Loan Balance": With respect to each Mortgage Loan, the
outstanding principal balance thereof as of the Initial Cut-Off Date or
Subsequent Cut-Off Date, as the case may be, less any principal amount relating
to such Mortgage Loan included in previous related Monthly Remittance Amounts
that were transferred by the Master Servicer or any Sub-Servicer to the Trustee
for deposit in the Certificate Account; provided, however, that the Loan Balance
for any Mortgage Loan which has become a Liquidated Loan shall be zero as of the
first day of the Remittance Period following the Remittance Period in which such
Mortgage Loan becomes a Liquidated Loan, and at all times thereafter.

                  "Loan Purchase Price": With respect to any Mortgage Loan
purchased from the Trust on a Remittance Date pursuant to Section 3.3, 3.4,
3.6(b) or 8.10 hereof, an amount equal to the Loan Balance of such Mortgage Loan
as of such Remittance Date, plus one month's accrued interest (if not already
deposited in the Principal and Interest Account) on the outstanding Loan Balance
as of the beginning of the related Remittance Period computed at the Coupon Rate
less the Servicing Fee (expressed as an annual percentage rate), together with,
without duplication, the aggregate amount of (i) all delinquent interest, all
Delinquency Advances and Servicing Advances theretofore made and not
subsequently recovered from the related Mortgage Loan, (ii) all Delinquency
Advances which the Master Servicer or any Sub-Servicer has theretofore failed to
remit with respect to such Mortgage Loan and (iii) any Group I Reimbursement
Amount or Group II Reimbursement Amount, as the case may be, relating to such
Mortgage Loan relating to such Group.

                  "London Business Day": A day on which banks are open for
dealing in foreign currency and exchange in London and New York City.

                  "Lower-Tier Balance": As to each Class of Lower-Tier Interests
and any Payment Date, the Initial Lower-Tier Balance as set forth in Section
2.8(a) minus all amounts distributed as principal of such Class on previous
Payment Dates.

                  "Lower-Tier Interest 1": The interest of that name established
pursuant to Section 2.8(a) hereof.


                                       29
<PAGE>   31


                  "Lower-Tier Interest 2": The interest of that name established
pursuant to Section 2.8(a) hereof.

                  "Lower-Tier Interest 3": The interest of that name established
pursuant to Section 2.8(a) hereof.

                  "Lower-Tier Interest 4": The interest of that name established
pursuant to Section 2.8(a) hereof.

                  "Lower-Tier Interest 5": The interest of that name established
pursuant to Section 2.8(a) hereof.

                  "Lower-Tier Pass-Through Rate": As to each of the respective
Lower-Tier Interests, the applicable "Lower-Tier Pass-Through Rate" set forth in
Section 2.8 hereof.

                  "Lower-Tier REMIC": The segregated pool of assets consisting
of the Mortgage Loans, the Accounts (except for the Non-REMIC Estate), any REO
Property and any proceeds of the foregoing.

                  "Lower-Tier REMIC Interests": As defined in Section 2.8(b)
hereof.

                  "Lower-Tier REMIC Regular Interests": As defined in Section
2.8(b) hereof.

                  "Lower-Tier REMIC Residual Interest": The Class RL
Certificate.

                  "Master Servicer": Advanta Mortgage Corp. USA, a Delaware
corporation, and its permitted successors and assigns.

                  "Master Servicer Affiliate": A Person (i) controlling,
controlled by or under common control with the Master Servicer and (ii) which
qualifies to service residential mortgage loans and is acting as a Sub-Servicer
pursuant to Section 8.3 hereof.

                  "Master Servicer's Trust Receipt": The Master Servicer's trust
receipt in the form set forth as Exhibit I hereto.

                  "Master Transfer Agreement": Any one of (x) the Master Loan
Transfer Agreement dated as of May 1, 1999 among the Sponsor, the Trustee and
the Affiliated Originators named therein and (y) any similar agreement with an
Unaffiliated Originator designated as a "Master Transfer Agreement" together, in
either case, with any related Conveyance Agreements (as defined therein).

                  "Monthly Excess Cashflow Amount": As applicable, the Group I
Monthly Excess Cashflow Amount or the Group II Monthly Excess Cashflow Amount.

                  "Monthly Excess Interest Amount": With respect to Group I, the
Group I Monthly Excess Interest Amount, and with respect to Group II, the Group
II Monthly Excess Interest Amount.

                  "Monthly Remittance Amount": With respect to Group I, the
Group I Monthly Remittance Amount, and with respect to Group II, the Group II
Monthly Remittance Amount.

                  "Moody's":  Moody's Investors Service, Inc.


                                       30
<PAGE>   32


                  "Mortgage": The mortgage, deed of trust or other instrument
creating a first or junior lien on an interest in real property securing a Note.

                  "Mortgage File": The documents delivered to the Trustee
pursuant to Section 3.5 hereof pertaining to a particular Mortgage Loan and any
additional documents required to be added to the Advanta Mortgage File or
Conduit Mortgage File, as appropriate, pursuant to this Agreement.

                  "Mortgage Insurance Policy": Any hazard, title or primary
mortgage insurance policy relating to a Mortgage Loan, but excluding any
non-mortgage related or credit life insurance policy. The term "Mortgage
Insurance Policy" shall not include the Certificate Insurance Policy.

                  "Mortgage Loan Group": Either Group I or Group II. References
herein to the related Class of Class A Certificates, when used with respect to a
Mortgage Loan Group, shall mean (A) in the case of Group I, the Group I
Certificates and (B) in the case of Group II, the Group II Certificates.

                  "Mortgage Loans": The mortgage loans transferred and assigned
to the Trust pursuant to Section 3.5(a) hereof including any Subsequent Mortgage
Loans, together with any Qualified Replacement Mortgages substituted therefor in
accordance with this Agreement, identified in the Schedule of Mortgage Loans.
The term "Mortgage Loan" includes the terms "First Mortgage Loan" and "Junior
Mortgage Loan". The term "Mortgage Loan" includes any Mortgage Loan which is
Delinquent, which relates to a foreclosure or which relates to a Property which
is an REO Property prior to such Property's disposition by the Trust. Any
mortgage loan which, although intended by the parties hereto to have been, and
which purportedly was, transferred and assigned to the Trust by the Sponsor, in
fact was not transferred and assigned to the Trust for any reason whatsoever
shall nevertheless be considered a "Mortgage Loan" for all purposes of this
Agreement. The term "Mortgage Loan" includes the terms "Initial Mortgage Loan",
"Subsequent Mortgage Loan" and "Qualified Replacement Mortgage".

                  "Mortgagor": The obligor on a Note.

                  "Net Liquidation Proceeds": As to any Liquidated Loan,
Liquidation Proceeds net of, without duplication, Liquidation Expenses,
unreimbursed Servicing Advances, unreimbursed Delinquency Advances and accrued
and unpaid Servicing Fees through the date of liquidation. In no event shall Net
Liquidation Proceeds with respect to any Liquidated Loan be less than zero.

                  "Net Monthly Excess Cashflow": An amount as defined in Section
7.5(b)(E).

                  "Nonrecoverable Advances": With respect to any Mortgage Loan,
(i) any Delinquency Advance or Servicing Advance previously made and not
reimbursed pursuant to Sections 7.5 or 8.9, (ii) a Delinquency Advance or
Servicing Advance proposed to be made in respect of a Mortgage Loan or REO
Property either of which, in the good faith business judgment of the Master
Servicer, as evidenced by an Officer's Certificate delivered no later than 1
Business Day prior to the related Determination Date to the Certificate Insurer
and the Trustee would not be ultimately recoverable pursuant to Sections 7.5 or
8.9 or (iii) any other advance identified as a Nonrecoverable Advance in
subsection 8.9(d).


                                       31
<PAGE>   33


                  "Non-REMIC Estate": Collectively, the Supplemental Interest
Trust, the Supplemental Interest Payment Account, the Capitalized Interest
Account and the Pre-Funding Account.

                  "Note": The note or other evidence of indebtedness of a
Mortgagor under a Mortgage Loan.

                  "Officer's Certificate": A certificate signed by any
Authorized Officer of any Person delivering such certificate.

                  "Operative Documents": Collectively, this Agreement, the
Master Transfer Agreements, the Subsequent Transfer Agreements, the Certificate
Insurance Policy, the Insurance Agreement, the Indemnification Agreement and
Certificates.

                  "Original Certificate Principal Balance": The Certificate
Principal Balances as of the Startup Day of each of the following Classes of
Certificates:


                     Class A-1 Certificates     =     $114,000,000
                     Class A-2 Certificates     =     $ 90,000,000
                     Class A-3 Certificates     =     $ 40,000,000
                     Class A-4 Certificates     =     $ 95,000,000
                     Class A-5 Certificates     =     $ 31,700,000
                     Class A-6 Certificates     =     $ 41,000,000
                     Class A-7 Certificates     =     $105,800,000


                  "Original Principal Amount": With respect to each Note, the
principal amount of such Note on the date of origination thereof or with respect
to Junior Mortgages, the sum of (i) the principal amount of the mortgage note
relating to the Senior Lien plus (ii) the principal amount of the Note conveyed
to the Trust, as the case may be, on the date of origination thereof.

                  "Originator": Any entity from which the Sponsor has purchased
(or, in the case of Subsequent Mortgage Loans, will purchase) Mortgage Loans,
including any Affiliated Originator and any Unaffiliated Originator.

                  "Outstanding": With respect to all Certificates of a Class, as
of any date of determination, all such Certificates theretofore executed and
delivered hereunder except:

                  (i) Certificates theretofore cancelled by the Trustee or
         delivered to the Trustee for cancellation;

                  (ii) Certificates or portions thereof for which full and final
         payment money in the necessary amount has been theretofore deposited
         with the Trustee in trust for the Owners of such Certificates;

                  (iii) Certificates in exchange for or in lieu of which other
         Certificates have been executed and delivered pursuant to this
         Agreement, unless proof satisfactory to the Trustee is presented that
         any such Certificates are held by a bona fide purchaser; and


                                       32
<PAGE>   34


                  (iv) Certificates alleged to have been destroyed, lost or
         stolen for which replacement Certificates have been issued as provided
         for in Section 5.5 hereof.

                  "Overcollateralization Amount": With respect to Group I, the
Group I Overcollateralization Amount and with respect to Group II, the Group II
Overcollateralization Amount.

                  "Overcollateralization Deficiency Amount": With respect to
Group I, the Group I Overcollateralization Deficiency Amount and with respect to
Group II, the Group II Overcollateralization Deficiency Amount.

                  "Overcollateralization Deficit": With respect to Group I, the
Group I Overcollateralization Deficit and with respect to Group II, the Group II
Overcollateralization Deficit.

                  "Overcollateralization Increase Amount": With respect to Group
I, the Group I Overcollateralization Increase Amount and with respect to Group
II, the Group II Overcollateralization Increase Amount.

                  "Overcollateralization Reduction Amount": With respect to
Group I, the Group I Overcollateralization Reduction Amount and with respect to
Group II, the Group II Overcollateralization Reduction Amount.

                  "Owner": The Person in whose name a Certificate is registered
in the Register, to the extent described in Section 5.6.

                  "Pass-Through Rate": As to the each Class of Certificates, the
related Pass-Through Rate.

                  "Payment Date": Any date on which the Trustee is required to
make distributions to the Owners, which shall be the 25th day of each calendar
month, or if the 25th day is not a Business Day, then the next succeeding
Business Day, commencing June 25, 1999.

                  "Percentage Interest": As to any Class A Certificate, that
percentage, expressed as a fraction, the numerator of which is the Original
Certificate Principal Balance of such Certificate and the denominator of which
is the Original Certificate Principal Balance of all Certificates of the same
Class; and as to any Class B, Class BS, Class R or Class RL Certificate, that
percentage interest set forth on such Class B, Class BS, Class R or Class RL
Certificate, respectively.

                  "Person": Any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.

                  "Pool Cumulative Realized Losses": With respect to any period,
the sum of all Realized Losses with respect to the Mortgage Loans experienced
during such period.

                  "Pool Factor": As defined in Section 7.8(a) hereof.

                  "Pool Principal Balance": The aggregate principal balances of
all Mortgage Loans.


                                       33
<PAGE>   35


                  "Pre-Funding Account": The Pre-Funding Account established in
accordance with Section 7.2 hereof and maintained by the Trustee.

                  "Pre-Funding Earnings": With respect to any Payment Date, the
actual investment earnings earned during the period from the prior Payment Date
(or with respect to the initial Payment Date, from the Startup Day) through but
not including such Payment Date (inclusive) on the Pre-Funding Account during
such period as calculated by the Trustee pursuant to Section 3.8(e) hereof.

                  "Pre-Funding Period": The period commencing on the Startup Day
and ending on the earliest to occur of (i) the date on which the Group I
Pre-Funded Amount (exclusive of any investment earnings) is less than $100,000,
(ii) the date on which any Event of Default occurs and (iii) July 16, 1999.

                  "Premium Amount": With respect to a Group of Mortgage Loans,
as to any Payment Date, the product of (x) one-twelfth of the Premium Percentage
applicable to such Group and (y) the Certificate Principal Balance of such Group
of Certificates on such Payment Date (after taking into account any
distributions of principal for such Group on such Payment Date).

                  "Premium Percentage": The percentage defined as such in the
Insurance Agreement with respect to the related Group.

                  "Prepaid Installment": With respect to any Mortgage Loan, any
payment of principal and accrued interest thereon received prior to the
scheduled due date for such payment, intended by the Mortgagor as an early
payment thereof and not as a Prepayment with respect to such Mortgage Loan.

                  "Prepayment": Any payment of principal of a Mortgage Loan
which is received by the Master Servicer in advance of the scheduled due date
for such payment (other than the principal portion of any Prepaid Installment),
and the proceeds of any Mortgage Insurance Policy which are to be applied as a
payment of principal on the related Mortgage Loan shall be deemed to be
Prepayments for all purposes of this Agreement.

                  "Preservation Expenses": Expenditures made by the Master
Servicer or any Sub-Servicer in connection with a foreclosed Mortgage Loan prior
to the liquidation thereof, including, without limitation, expenditures for real
estate property taxes, hazard insurance premiums, flood insurance premiums and
property restoration or preservation.

                  "Principal and Interest Account": Collectively, each principal
and interest account created by the Master Servicer or any Sub-Servicer pursuant
to Section 8.8(a) hereof, or pursuant to any Sub-Servicing Agreement.

                  "Principal Remittance Amount": As applicable, the Group I
Principal Remittance Amount or the Group II Principal Amount.

                  "Prohibited Transaction": "Prohibited transaction" shall have
the meaning set forth from time to time in the definition thereof contained in
Section 860F(a)(2) of the Code (or any successor statute thereto) and applicable
to the Trust.

                  "Property": The underlying property securing a Mortgage Loan.


                                       34
<PAGE>   36


                  "Prospectus": Such final prospectus dated May 6, 1999, as
supplemented by a prospectus supplement dated May 26, 1999 relating to the Class
A Certificates.

                  "Purchase Option Period": As defined in Section 9.3(b) hereof.

                  "Qualified Liquidation": "Qualified Liquidation" shall have
the meaning set forth from time to time in the definition thereof at Section
860F(a)(4) of the Code (or any successor statute thereto) and applicable to the
Trust.

                  "Qualified Mortgage": "Qualified Mortgage" shall have the
meaning set forth from time to time in the definition thereof at Section
860G(a)(3) of the Code (or any successor statute thereto) and applicable to the
Trust and the Mortgage Loan Groups.

                  "Qualified Replacement Mortgage": A Mortgage Loan substituted
for another pursuant to Section 3.3, 3.4 or 3.6(b) hereof.

                  "Rating Agency":  Each of Standard & Poor's and Moody's.

                  "Realized Loss": As to any Liquidated Loan, the amount, if
any, by which the Loan Balance thereof as of the date of liquidation exceeds the
Net Liquidation Proceeds realized thereon.

                  "Record Date": With respect to each Payment Date and (x) with
respect to the Class A-2, A-3, A-4, A-5 and A-6 Certificates, the last Business
Day of the calendar month immediately preceding the calendar month in which such
Payment Date occurs and (y) with respect to the Class A-1 and A-7 Certificates,
the Business Day immediately preceding such Payment Date (unless the
Certificates become definitive, in which event the Record Date shall be the last
Business Day of the calendar month immediately preceding the calendar month in
which such Payment Date occurs).

                  "Redeeming Party": As defined in Section 9.2(a) hereof.

                  "Reference Banks": Any leading banks selected by the Trustee
after consultation with the Master Servicer and engaged in transactions in
Eurodollar deposits in the international Eurocurrency market (i) with an
established place of business in London, (ii) which have been designated as such
by the Trustee after consultation with the Master Servicer and (iii) which are
not controlling, controlled by, or under common control with, the Sponsor.

                  "Register": The register maintained by the Trustee in
accordance with Section 5.4 hereof, in which the names of the Owners are set
forth.

                  "Registrar": The Trustee, acting in its capacity as Registrar
appointed pursuant to Section 5.4 hereof, or any duly appointed and eligible
successor thereto.

                  "Registration Statement": The Registration Statement (No.
333-77927) filed by the Sponsor with the Securities and Exchange Commission,
including all amendments thereto and including the Prospectus relating to the
Class A Certificates constituting a part thereof.

                  "Reimbursement Amount": With respect to Group I, the Group I
Reimbursement Amount and with respect to Group II, the Group II Reimbursement
Amount.


                                       35
<PAGE>   37


                  "REMIC": A "real estate mortgage investment conduit" within
the meaning of Section 860D of the Code.

                  "REMIC Provisions": Provisions of the federal income tax law
relating to real estate mortgage investment conduits, which appear at Sections
860A through 860G of the Code, and related provisions, and regulations and
rulings promulgated thereunder, as the foregoing may be in effect from time to
time.

                  "REMIC Trust": The segregated pool of assets consisting of the
Trust Estate, except for the Supplemental Interest Trust, the Supplemental
Interest Payment Account, the Capitalized Interest Account and the Pre-Funding
Account.

                  "Remittance Date": Any date on which the Master Servicer is
required to remit monies on deposit in the Principal and Interest Account to the
Trustee, which shall be no later than the 18th day of each month, or, if such
day is not a Business Day, the immediately succeeding Business Day, commencing
in the month following the month in which the Startup Day occurs.

                  "Remittance Period": The period beginning on the first day of
the calendar month immediately preceding the month in which a Remittance Date
occurs and ending on the last day of such immediately preceding calendar month.

                  "REO Property": A Property acquired by the Master Servicer or
any Sub-Servicer on behalf of the Trust through foreclosure or grant of a
deed-in-lieu of foreclosure in connection with a defaulted Mortgage Loan.

                  "Replacement Cut-Off Date": With respect to any Qualified
Replacement Mortgage, the first day of the calendar month in which such
Qualified Replacement Mortgage is transferred and assigned to the Trust.

                  "Representation Letter": The letters to, or agreements with,
the Depository to effectuate a book entry system with respect to the Class A
Certificates registered in the Register under the nominee name of the
Depository.

                  "Representative": Morgan Stanley & Co. Incorporated, as
representative of the Underwriters.

                  "Required Distributions": The Group I Required Distributions
or the Group II Required Distributions, as applicable.

                  "Reserve Interest Rate": As of any Interest Determination
Date, the rate per annum that the Trustee determines to be either (i) the
arithmetic mean (rounded to the nearest whole multiple of 1/16%) of the
one-month U.S. dollar lending rates which New York City banks, selected by the
Trustee, are quoting on the relevant Interest Determination Date to the
principal London offices of leading banks in the London interbank market or, in
the event that the Trustee can determine no such arithmetic mean, (ii) the
lowest one-month U.S. dollar lending rate which New York City banks selected by
the Trustee are quoting on such Interest Determination Date to leading European
banks.


                                       36
<PAGE>   38


                  "SAS 70": Means the "Statement on Auditing Standards No. 70
Reports on the Processing of Transactions by Service Organizations" as in effect
as of the date hereof, which may be amended from time to time.

                  "Schedule of Mortgage Loans": The schedule of Mortgage Loans,
attached hereto as Schedule I as may be further supplemented to include
Subsequent Mortgage Loans or Qualified Replacement Mortgages. The information
contained on each Schedule of Mortgage Loans shall be delivered to the Trustee
in an electronic media satisfactory to the Trustee.

                  "Securities Act": The Securities Act of 1933, as amended.

                  "Senior Lien": With respect to any Junior Mortgage Loan, the
mortgage loan relating to the corresponding Property having a priority lien.

                  "Servicing Advance": As defined in Section 8.9(c) and Section
8.13 hereof.

                  "Servicing Fee": As to any Payment Date the product of (x)
one-twelfth of 0.75% and (y) the aggregate Loan Balances of the Mortgage Loans
as of the opening of business on the first day of the Remittance Period
preceding such Payment Date.

                  "Servicer Termination Loss Trigger": As defined in the
Insurance Agreement.

                  "Special Advance": Any advance made by the Master Servicer
pursuant to Section 8.9(d) hereof.

                  "Specified Overcollateralization Amount": As defined in the
Insurance Agreement.

                  "Sponsor": Advanta Mortgage Conduit Services, Inc., a Delaware
corporation.

                  "Standard & Poor's": Standard & Poor's Ratings Services, a
division of The McGraw Hill Companies.

                  "Startup Day": June 3, 1999.

                  "Step-Up Payment Date": The Payment Date following the
calendar month in which the Initial Clean-Up Call Date occurs.

                  "Subsequent Cut-Off Date": With respect to any Subsequent
Mortgage Loans, the opening of business on the first day of the calendar month
in which such Subsequent Mortgage Loans are transferred and assigned to the
Trust.

                  "Subsequent Mortgage Loans": The fixed-rate Mortgage Loans
sold to the Trust pursuant to Section 3.8 hereof, which shall be listed on the
Schedule of Mortgage Loans attached to the Subsequent Transfer Agreement.

                  "Subsequent Transfer Agreement": Each Subsequent Transfer
Agreement dated as of a Subsequent Transfer Date executed by the Trustee and the
Sponsor substantially in the form of Exhibit J hereto, by which Subsequent
Mortgage Loans are sold and assigned to the Trust.


                                       37
<PAGE>   39


                  "Subsequent Transfer Date": The date specified in each
Subsequent Transfer Agreement.

                  "Substitution Amount": In connection with the delivery of any
Qualified Replacement Mortgage, if the outstanding principal amount of such
Qualified Replacement Mortgage as of the applicable Replacement Cut-Off Date is
less than the Loan Balance of the Mortgage Loan being replaced as of such
Replacement Cut-Off Date, an amount equal to such difference together with
accrued and unpaid interest on such amount calculated at the Coupon Rate (net of
the Servicing Fee) of the Mortgage Loan being replaced.

                  "Sub-Servicer": Any Person with whom the Master Servicer has
entered into a Sub-Servicing Agreement and who is either a Master Servicer
Affiliate or satisfies any requirements set forth in Section 8.3 hereof in
respect of the qualification of a Sub-Servicer .

                  "Sub-Servicing Agreement": The written contract between the
Master Servicer and any Sub-Servicer (other than a Master Servicer Affiliate)
relating to servicing and/or administration of certain Mortgage Loans as
permitted by Section 8.3 hereof.

                  "Supplemental Interest Amount": With respect to any Payment
Date, the sum of (A) the excess, if any, of (x) the Class A-1 Current Interest
due on the Class A-1 Certificates using the Formula Pass-Through Rate for the
Class A-1 Certificates applicable to such Payment Date over (y) the interest due
on such Class calculated at the Fixed Rate Group Available Funds Cap Rate
applicable to such Payment Date and (B) the excess, if any, of (x) the Class A-7
Current Interest due on the Class A-7 Certificates calculated using the Formula
Pass-Through Rate for the Class A-7 Certificates applicable to such Payment Date
over (y) the interest due on such Class calculated at the ARM Group Available
Funds Cap Rate applicable to such Payment Date.

                  "Supplemental Interest Payment Account": The Supplemental
Interest Payment Account established in accordance with Section 7.10(a) hereof
and maintained by the Trustee.

                  "Supplemental Interest Payment Amount Available": As defined
in Section 7.10(b) hereof.

                  "Supplemental Interest Right": As defined in Section 7.10(e)
hereof.

                  "Supplemental Interest Shortfall Amount": As defined in
Section 7.10(b) hereof.

                  "Supplemental Interest Shortfall Carry-Forward Amount": With
respect to any Payment Date, the sum of (x) the amount, if any, by which (i) the
sum of (A) the Supplemental Interest Shortfall Amount as of the immediately
preceding Payment Date and (B) any unpaid Supplemental Interest Shortfalls, as
calculated up through the previous Payment Date and outstanding on such
immediately preceding Payment Date, exceeds (ii) the amount of the actual
distributions made on account of each Supplemental Interest Right on such
immediately preceding Payment Date and (y) interest on such amount at the
applicable Pass-Through Rate calculated on the basis of the actual number of
days in the related Accrual Period.

                  "Supplemental Interest Trust": The Advanta Supplemental
Interest Trust 1999-2 created pursuant to Section 7.10(a) hereof.

                  "Tax Matters Person": The Tax Matters Person appointed
pursuant to Section 11.17 hereof.


                                       38
<PAGE>   40


                  "Tax Matters Person Residual Interest": The 100% interest in
the Class R Certificate and the Class RL Certificate, each of which shall be
issued to and held by Advanta Finance Residual Corporation or certain affiliates
throughout the term hereof unless another person that is not a Disqualified
Organization shall accept an assignment of such interest and the designation of
Tax Matters Person pursuant to Section 11.17 hereof.

                  "Termination Notice": As defined in Section 9.3(b) hereof.

                  "Termination Price": As defined in Section 9.2(a) hereof.

                  "Transaction Documents": Collectively this Agreement, the
Insurance Agreement, the Underwriting Agreement relating to the Class A
Certificates, the Transfer Agreements, any Sub-Servicing Agreement, the
Indemnification Agreement, any Subsequent Transfer Agreements, the Registration
Statement relating to the Class A Certificates and the Certificates.

                  "Trust": Advanta Mortgage Loan Trust 1999-2, the trust created
under this Agreement.

                  "Trust Estate": Collectively, all money, instruments and other
property, to the extent such money, instruments and other property are subject
or intended to be held in trust, and in the subtrusts, for the benefit of the
Owners, including all proceeds thereof, including, without limitation, (i) the
Mortgage Loans, (ii) such amounts in all Accounts including principal collected
and interest accrued in respect of the related Mortgage Loans on or after the
Initial Cut-Off Date, each Subsequent Cut-Off date and each Replacement Cut-Off
Date, as applicable, including Eligible Investments, as may from time to time
may be held in such Accounts (except any premium recapture and interest accrued
prior to the Initial Cut-Off Date, each Subsequent Cut-Off Date and each
Replacement Cut-Off Date, as applicable and except for net investment earnings
on the Principal and Interest Account, the Capitalized Interest Account and on
the Certificate Account), (iii) any Property, the ownership of which has been
effected on behalf of the Trust as a result of foreclosure or acceptance by the
Master Servicer of a deed in lieu of foreclosure and that has not been withdrawn
from the Trust, (iv) any Mortgage Insurance Policies relating to the Mortgage
Loans and any rights of the Sponsor or any Affiliated Originator under any
Mortgage Insurance Policies, (v) Net Liquidation Proceeds with respect to any
Liquidated Loan, (vi) the rights of the Trustee under the Certificate Insurance
Policy, and (vii) the rights of the Sponsor against any Originator pursuant to
the related Master Transfer Agreement.

                  "Trustee": Bankers Trust Company of California, N.A., located
on the date of execution of this Agreement at 3 Park Plaza, Irvine, California
92614, a national banking association, not in its individual capacity but solely
as Trustee under this Agreement, and any successor hereunder.

                  "Trustee's Fees": With respect to any Payment Date and
Mortgage Loan Group, the product of (x) one-twelfth of the Trustee Fee Rate and
(y) the aggregate Loan Balance of the Mortgage Loan in the related Mortgage Loan
Group as of the beginning of the related Remittance Period.

                  "Trustee Fee Rate": 0.009% per annum.

                  "Unaffiliated Originator Loan": Any Mortgage Loan purchased by
the Sponsor from an Unaffiliated Originator and sold to the Trust by the
Sponsor.


                                       39
<PAGE>   41


                  "Unaffiliated Originators": Any Originator who is not
affiliated with the Sponsor.

                  "Uncertificated Interest": As defined in Section 2.8(b)
hereof.

                  "Underwriters": Morgan Stanley & Co. Incorporated, Prudential
Securities Incorporated and Salomon Smith Barney Inc.

                  "Upper-Tier REMIC": The REMIC established pursuant to Section
2.8 hereof. The assets of the Upper-Tier REMIC shall be the Lower-Tier REMIC
Regular Interests.

                  "Upper-Tier REMIC Regular Interests": As defined in Section
2.8(c) hereof.

                  "Warehouse Trust": Any trust established by the Sponsor or an
affiliate of the Sponsor to finance the origination of mortgage loans.

                  Use of Words and Phrases. "Herein", "hereby", "hereunder",
"hereof", "hereinbefore", "hereinafter" and other equivalent words refer to this
Agreement as a whole and not solely to the particular section of this Agreement
in which any such word is used. The definitions set forth in Section 1.1 hereof
include both the singular and the plural. Whenever used in this Agreement, any
pronoun shall be deemed to include both singular and plural and to cover all
genders.

                  SECTION 1.2. CAPTIONS; TABLE OF CONTENTS. The captions or
headings in this Agreement and the Table of Contents are for convenience only
and in no way define, limit or describe the scope and intent of any provisions
of this Agreement.

                  SECTION 1.3. OPINIONS. Each opinion with respect to the
validity, binding nature and enforceability of documents or Certificates may be
qualified to the extent that the same may be limited by applicable bankruptcy,
insolvency, reorganization, moratorium or other similar laws affecting the
enforcement of creditors' rights generally and by general principles of equity
(whether considered in a proceeding or action in equity or at law) and may state
that no opinion is expressed on the availability of the remedy of specific
enforcement, injunctive relief or any other equitable remedy. Any opinion
required to be furnished by any Person hereunder must be delivered by counsel
upon whose opinion the addressee of such opinion may reasonably rely, and such
opinion may state that it is given in reasonable reliance upon an opinion of
another, a copy of which must be attached, concerning the laws of a foreign
jurisdiction.

                                   ARTICLE II

                   ESTABLISHMENT AND ORGANIZATION OF THE TRUST

                  SECTION 2.1. ESTABLISHMENT OF THE TRUST. The parties hereto do
hereby create and establish, pursuant to the laws of the State of New York and
this Agreement, the Trust, which, for convenience, shall be known as "Advanta
Mortgage Loan Trust 1999-2". Each Mortgage Loan Group shall constitute a
subtrust of the Trust.

                  SECTION 2.2. OFFICE. The office of the Trust shall be in care
of the Trustee, addressed to Bankers Trust Company of California, N.A., 3 Park
Plaza, Sixteenth Floor, Irvine, California 92614, or at such other address as
the Trustee may designate by notice to the Sponsor, the Master Servicer, the
Owners and the Certificate Insurer.


                                       40
<PAGE>   42


                  SECTION 2.3. PURPOSES AND POWERS. The purpose of the Trust is
to engage in the following activities, and only such activities: (i) the
issuance of the Certificates and the acquiring, owning and holding of Mortgage
Loans and the Trust Estate in connection therewith; (ii) activities that are
necessary, suitable or convenient to accomplish the foregoing or are incidental
thereto or connected therewith, including the investment of monies in accordance
with this Agreement; and (iii) such other activities as may be required in
connection with conservation of the Trust Estate and distributions to the
Owners; provided, however, that nothing contained herein shall permit the
Trustee to take any action which would result in the loss of REMIC status for
the REMIC Trust.

                  SECTION 2.4. APPOINTMENT OF THE TRUSTEE; DECLARATION OF TRUST.
The Sponsor hereby appoints the Trustee as trustee of the Trust effective as of
the Startup Day, to have all the rights, powers and duties set forth herein. The
Trustee hereby acknowledges and accepts such appointment, represents and
warrants its eligibility as of the Startup Day to serve as Trustee pursuant to
Section 10.8 hereof and declares that it will hold the Trust Estate in trust
upon and subject to the conditions set forth herein for the benefit of the
Owners and the Certificate Insurer, as their interests may appear.

                  SECTION 2.5. EXPENSES OF THE TRUST. Any expenses of the Trust
that have been reviewed and approved by the Sponsor (which approval shall not be
unreasonably withheld), including the reasonable expenses of the Trustee shall
be paid by the Sponsor to the Trustee or to such other Person to whom such
amounts may be due. Failure by the Sponsor to pay any such fees or other
expenses shall not relieve the Trustee of its obligations hereunder. The Trustee
hereby covenants with the Owners that every material contract or other material
agreement entered into by the Trustee on behalf of the Trust shall expressly
state therein that no Owner shall be personally liable in connection with such
contract or agreement.

                  SECTION 2.6. OWNERSHIP OF THE TRUST. On the Startup Day the
ownership interests in the Trust and the subtrusts shall be transferred as set
forth in Section 4.2 hereof, such transfer to be evidenced by sale of the
Certificates as described therein. Thereafter, transfer of any ownership
interest shall be governed by Sections 5.4 and 5.8 hereof.

                  SECTION 2.7. SITUS OF THE TRUST. It is the intention of the
parties hereto that the Trust constitute a trust under the laws of the State of
New York. The Trust will be created in, and all Accounts maintained by the
Trustee on behalf of the Trust will be located in, the State of New York. The
Trust will not have any employees and will not have any real or personal
property (other than property acquired pursuant to Section 8.13 hereof) located
in any state other than in the State of New York and payments will be received
by the Trust only in the State of New York and payments from the Trust will be
made only from the State of New York. The Trust's only office will be at the
office of the Trustee as set forth in Section 2.2 hereof.

                  SECTION 2.8. MISCELLANEOUS REMIC PROVISIONS.

                  (a) The Trustee shall elect that each of the Lower-Tier REMIC
and the Upper-Tier REMIC shall be treated as a REMIC under Section 860D of the
Code. Any inconsistencies or ambiguities in this Agreement or in the
administration of this Agreement shall be resolved in a manner that preserves
the validity of such REMIC elections. The assets of the Lower-Tier REMIC shall
include the Mortgage Loans, the Accounts (except for the Non-REMIC Estate), any
REO Property, and any proceeds of the foregoing. The Lower-Tier REMIC Regular
Interests (as defined below) shall constitute the assets of the Upper-Tier
REMIC.


                                       41
<PAGE>   43


                  (b) The Lower-Tier REMIC will be evidenced by (x) Lower-Tier
Interest 1, Lower-Tier Interest 2, Lower-Tier Interest 3, Lower-Tier Interest 4,
and Lower-Tier Interest 5 (the "Lower-Tier REMIC Regular Interests"), which will
be uncertificated and non-transferable and are hereby designated as the "regular
interests" in the Lower-Tier REMIC and (y) the Lower-Tier REMIC Residual
Interest, which is hereby designated as the single "residual interest" in the
Lower-Tier REMIC (the Lower-Tier REMIC Regular Interests, together with the
Lower-Tier REMIC Residual Interest, the "Lower-Tier REMIC Interests"). The
Lower-Tier REMIC Regular Interests shall be recorded on the records of the
Lower-Tier REMIC as being issued to and held by the Trustee on behalf of the
Upper-Tier REMIC.

                  Lower-Tier Interest 1 shall have an initial principal balance
equal to one percent of the sum of the initial principal balances of the Group I
Certificates (that is, $4,115,000). Lower-Tier Interest 2 shall have an initial
principal balance equal to one percent of the Group I Original Balance (that is,
$4,115,000). Lower-Tier Interest 3 shall have an initial principal balance equal
to one percent of the initial principal balance of the Class A-7 Certificates
(that is, $1,048,000). Lower-Tier Interest 4 shall have an initial principal
balance equal to one percent of the Group II Original Balance (that is,
$1,048,000). Lower-Tier Interest 5 shall have an initial principal balance equal
to the excess of (i) the sum of the Group I Original Balance and the Group II
Original Balance over (ii) the sum of the initial principal balances of
Lower-Tier Interest 1, Lower-Tier Interest 2, Lower-Tier Interest 3, and
Lower-tier Interest 4 (that is, $507,156,000).

                  On each Payment Date, principal payments on the Mortgage Loans
shall be allocated 99% to Lower-Tier Interest 2, Lower-Tier Interest 4 and
Lower-Tier Interest 5, and 1% to Lower-Tier Interest 1 and Lower-Tier Interest 3
until paid in full. The aggregate amount of principal allocated to the
Lower-Tier Interest 1 and Lower-Tier Interest 3 shall be apportioned between
such Interests in the same manner in which principal on the Mortgage Loans is
payable with respect to the Group I Certificates and the Class A-7 Certificates,
respectively. The aggregate amount of principal allocated to Lower-Tier Interest
2, Lower-Tier Interest 4 and Lower-Tier Interest 5 shall be allocated and
apportioned among such Interests first, to Lower-Tier Interest 2 and Lower-Tier
Interest 4 the least amount of principal necessary which when applied to such
Interests can be applied so that the ratio of the principal balance of
Lower-Tier Interest 2 to the principal balance of Lower-Tier Interest 4 equals
the ratio of the sum of Loan Balances of the Mortgage Loans in Group I to the
sum of the Loan Balances of the Mortgage Loans in Group II (the "Balance Ratio")
and second, to Lower-Tier Interest 5.

                  Any Overcollateralization Increase Amount will not be paid as
interest to the Lower-Tier REMIC Regular Interests, but instead to the extent
available, a portion of the interest payable with respect to Lower-Tier Interest
5 which equals 1% of the Overcollateralization Increase Amount (and, to the
extent 1% of the Overcollateralization Increase Amount exceeds the interest
payable on Lower-Tier Interest 5, a pro rata portion of the interest payable on
the Lower-Tier Interest 2 and Lower-Tier Interest 4 equal to such excess) will
be payable as a reduction of the principal balances of Lower-Tier Interest 1 and
Lower-Tier Interest 3 in the same manner in which the Overcollateralization
Increase Amount is allocated among the Class A-1, A-2, A-3, A-4, A-5, A-6 and
Class A-7 Certificates, respectively (and will be accrued and added to principal
on Lower-Tier Interest 2, Lower-Tier Interest 4 and Lower-Tier Interest 5 in the
same proportion as interest payable on such Interests is used to reduce
principal on other Interests as just described).

                  Notwithstanding the above, principal payments on the Mortgage
Loans that are attributable to the Overcollateralization Reduction Amount shall
be allocated to Lower-Tier Interest 2, Lower-Tier Interest 4 and Lower-Tier
Interest 5 (allocated first to Lower-Tier Interest



                                       42
<PAGE>   44


5 until such certificates are paid in full, and second to Lower-Tier Interest 2
and Lower-Tier Interest 4 and apportioned between Lower-Tier Interest 2 and
Lower-Tier Interest 4 in such a manner that the Balance Ratio is maintained
until paid in full).

                  Realized Losses shall be applied such that after all
distributions have been made on such Payment Date the principal balances
Lower-Tier Interest 1 and Lower-Tier Interest 3 are each 1% of the principal
balances of the Group I Certificates and Class A-7 Certificates, respectively,
and the aggregate principal balance of Lower-Tier Interest 2, Lower-Tier
Interest 4 and Lower-Tier Interest 5 is equal to the sum of the Loan Balances of
the Mortgage Loans less an amount equal to the sum of the principal balances of
Lower-Tier Interest 1 and Lower-Tier Interest 3 and is allocated and apportioned
first, to Lower-Tier Interest 2 and Lower-Tier Interest 4 the least amount of
Realized Losses necessary which when applied to such Interests can be applied in
such a manner that the Balance Ratio is maintained, and second, to Lower-Tier
Interest 5.

                  Lower-Tier Interest 1 and Lower-Tier Interest 2 shall each
have Pass-Through Rates equal to the Group I Net Weighted Average Coupon Rate
(expressed as a per annum rate on the sum of the Loan Balances for Mortgage
Loans in Group I). Lower-Tier Interest 3 and Lower-Tier Interest 4 shall each
have a Pass-Through Rate equal to the Group II Net Weighted Average Coupon Rate
(expressed as a per annum rate on the sum of the Loan Balances for the Mortgage
Loans in Group II). Lower-Tier Interest 5 shall have a Pass-Through Rate equal
to the weighted average of the Group I Net Weighted Average Coupon Rate and the
Group II Net Weighted Average Coupon Rate (expressed as a per annum rate on the
sum of Loan Balances of the Mortgage Loans). The Lower-Tier REMIC Residual
Interest shall have no principal balance and no Pass-Through Rate and shall be
entitled to only those distributable assets, if any, remaining in the Lower-Tier
REMIC on each Payment Date after all amounts required to be distributed to
Lower-Tier Interest 1, Lower-Tier Interest 2, Lower-Tier Interest 3, Lower-tier
Interest 4, and Lower-Tier Interest 5 and applicable Trust expenses have been
paid.

                  The Lower-Tier REMIC Interests will have the following
designations and Pass-Through Rates, and distributions of principal and interest
thereon shall be allocated to the Certificates in the following manner:

<TABLE>
<CAPTION>
                                                              Pass-              Allocation           Allocation
     Lower-Tier REMIC               Initial                  Through                 of                   of
         Interests                  Balance                    Rate              Principal             Interest
     ----------------            ------------                -------             ----------           ----------
     <S>                         <C>                          <C>                <C>                   <C>
               1                 $  4,115,000                  (1)                  (4)                  (5)

               2                 $  4,115,000                  (1)                  (4)                  (5)

               3                 $  1,058,000                  (2)                  (4)                  (5)

               4                 $  1,058,000                  (2)                  (4)                  (5)

               5                 $507,146,000                  (3)                  (4)                  (5)

           Lower-Tier                       0                  (6)                  (6)                  (6)
            Residual
</TABLE>



                                       43
<PAGE>   45


- ----------------------

(1)      The Pass-Through Rate on these Lower-Tier REMIC Regular Interests shall
         at any time of determination equal the Group I Net Weighted Average
         Coupon Rate.

(2)      The Pass-Through Rate on these Lower-Tier REMIC Regular Interest shall
         at any time of determination equal the Group II Net Weighted Average
         Coupon Rate.

(3)      The Pass-Through Rate on this Lower-Tier REMIC Regular Interest shall
         at any time of determination equal the weighted average of the Group I
         Net Weighted Average Coupon Rate and the Group II Net Weighted Average
         Coupon Rate.

(4)      Principal will be allocated to and apportioned among the Group I
         Certificates and the Class A-7 Certificates in the same proportion as
         principal from the Mortgage Loans is payable with respect to such
         Certificates, except that a portion of such principal in an amount
         equal to the Overcollateralization Reduction Amount shall first be
         allocated as a payment of interest to the Class B Certificates, and all
         principal will be allocated as a payment of interest to the Class B
         Certificates after the principal balances of the Class A Certificates
         have been reduced to zero.

(5)      Except as provided in the next sentence, interest will be allocated
         among the Group I Certificates and Class A-7 in the same proportion as
         interest is payable on such Certificates.

         Any interest with respect to each Lower-Tier REMIC Regular Interest in
         excess of the product of (i) 100 times the weighted average coupon of
         Lower-Tier Interest 1, Lower-Tier Interest 2, Lower-Tier Interest 3,
         Lower-Tier Interest 4 and Lower-Tier Interest 5, where Lower-Tier
         Interest 1 and Lower-Tier Interest 3 are first subject to a cap and
         floor equal to the weighted average of the Class A-1, A-2, A-3, A-4,
         A-5 and A-6 Pass-Through Rates and the Class A-7 Pass-Through Rate,
         respectively, and Lower-Tier Interest 2, Lower-Tier Interest 4 and
         Lower-Tier Interest 5 are each subject to a cap equal to 0%, and (ii)
         the principal balance of each such Lower-Tier Interest, shall not be
         allocated to the Class A Certificates but will be allocated to the
         Class B Certificates. However, the Class B Certificates shall be
         subordinated to the extent provided in Section 7.5. hereof.

(6)      On each Distribution Date, available funds, if any, remaining in the
         Lower-Tier REMIC after payments of interest and principal, as
         designated above, will be distributed to the Lower-Tier Residual
         Interest. It is expected that there shall not be any distributions on
         the Lower-Tier Residual Interest.

                  (c) The Class A-1, Class A-2, Class A-3, Class A-4, Class A-5,
Class A-6, Class A-7 and Class B Certificates are hereby designated as "regular
interests" with respect to the Upper-Tier REMIC (the "Upper-Tier REMIC Regular
Interests") and the Class R Certificate is hereby designated as the single
"residual interest" with respect to the Upper-Tier REMIC. On each Payment Date,
available funds, if any, remaining in the Upper-Tier REMIC after payments of
interest and principal as designated herein shall be distributed to the Class R
Certificates.

                  (d) For federal income tax purposes, the "latest possible
maturity date" for each of the Lower-Tier REMIC Regular Interests and Upper-Tier
REMIC Regular Interests is hereby set to be the Payment Date of May 2029.

                  (e) The Startup Day is hereby designated for each of the
Lower-Tier REMIC and Upper-Tier REMIC as the "startup day" within the meaning of
Section 860G(a)(9) of the Code.


                                       44
<PAGE>   46


                  (f) The Trustee shall provide to the Internal Revenue Service
and to the persons described in Section 860E(e)(3) and (6) of the Code, the
information described in Treasury regulations Section 1.860D-1(b)(5)(ii), or any
successor regulation thereto, with respect to each of the Lower-Tier REMIC and
the Upper-Tier REMIC. Such information will be provided in the manner described
in Treasury regulations Section 1.860E-2(a)(5), or any successor regulation
thereto.

                  (g) The Owner of the Tax Matters Person Residual Interests in
the Upper-Tier REMIC and the Lower-Tier REMIC is hereby designated as "tax
matters person" as defined in the REMIC Provisions with respect to each such
REMIC.

                  (h) The Trust and each REMIC shall, for federal income tax
purposes, maintain books on a calendar year basis and report income on an
accrual basis.

                  (i) The final scheduled Payment Date for any Class of
Certificates is hereby established as follows:

                       CLASS FINAL SCHEDULED PAYMENT DATES

                                            Final Scheduled
                         Class                Payment Date
                         -----                ------------
                       Class A-1             March 25, 2013
                       Class A-2             April 25, 2014
                       Class A-3              May 25, 2016
                       Class A-4              May 25, 2026
                       Class A-5              May 25, 2029
                       Class A-6             April 25, 2014
                       Class A-7              May 25, 2029


                                  ARTICLE III

                    REPRESENTATIONS, WARRANTIES AND COVENANTS
                     OF THE SPONSOR AND THE MASTER SERVICER;
                  COVENANT OF SPONSOR TO CONVEY MORTGAGE LOANS

                  SECTION 3.1. REPRESENTATIONS AND WARRANTIES OF THE SPONSOR.
The Sponsor hereby represents, warrants and covenants to the Trustee, the
Certificate Insurer and to the Owners as of the Startup Day that:

                  (a) The Sponsor is a corporation duly organized, validly
existing and in good standing under the laws of the State of Delaware and is in
good standing as a foreign corporation in each jurisdiction in which the nature
of its business, or the properties owned or leased by it make such qualification
necessary. The Sponsor has all requisite corporate power and authority to own
and operate its properties, to carry out its business as presently conducted and
as proposed to be conducted and to enter into and discharge its obligations
under this Agreement and the other Operative Documents to which it is a party.

                  (b) The execution and delivery of this Agreement and the other
Operative Documents to which the Sponsor is a party by the Sponsor and its
performance and compliance



                                       45
<PAGE>   47


with the terms of this Agreement and of the other Operative Documents to which
it is a party have been duly authorized by all necessary corporate action on the
part of the Sponsor and will not violate the Sponsor's Articles of Incorporation
or Bylaws or constitute a default (or an event which, with notice or lapse of
time, or both, would constitute a default) under, or result in the breach of,
any material contract, agreement or other instrument to which the Sponsor is a
party or by which the Sponsor is bound, or violate any statute or any order,
rule or regulation of any court, governmental agency or body or other tribunal
having jurisdiction over the Sponsor or any of its properties.

                  (c) This Agreement and the other Operative Documents to which
the Sponsor is a party, assuming due authorization, execution and delivery by
the other parties hereto and thereto, each constitutes a valid, legal and
binding obligation of the Sponsor, enforceable against it in accordance with the
terms hereof and thereof, except as the enforcement hereof and thereof may be
limited by applicable bankruptcy, insolvency, reorganization, moratorium or
other similar laws affecting creditors' rights generally and by general
principles of equity (whether considered in a proceeding or action in equity or
at law).

                  (d) The Sponsor is not in default with respect to any order or
decree of any court or any order, regulation or demand of any federal, state,
municipal or governmental agency, which might have consequences that would
materially and adversely affect the condition (financial or other) or operations
of the Sponsor or its properties or might have consequences that would
materially and adversely affect its performance hereunder and under the other
Operative Documents to which it is a party.

                  (e) No litigation is pending or, to the best of the Sponsor's
knowledge, threatened against the Sponsor which litigation might have
consequences that would prohibit its entering into this Agreement or any other
Operative Document to which it is a party or might have consequences that would
materially and adversely affect its performance hereunder and under the other
Operative Documents to which it is a party.

                  (f) No certificate of an officer, statement furnished in
writing or report delivered pursuant to the terms hereof by the Sponsor contains
any untrue statement of a material fact or omits to state any material fact
necessary to make the certificate, statement or report not misleading.

                  (g) The statements contained in the Registration Statement
which describe the Sponsor or matters or activities for which the Sponsor is
responsible in accordance with the Operative Documents or which are attributed
to the Sponsor therein are true and correct in all material respects, and the
Registration Statement does not contain any untrue statement of a material fact
with respect to the Sponsor or omit to state a material fact required to be
stated therein or necessary in order to make the statements contained therein
with respect to the Sponsor not misleading. To the best of the Sponsor's
knowledge and belief, the Registration Statement does not contain any untrue
statement of a material fact required to be stated therein or omit to state any
material fact required to be stated therein or necessary to make the statements
contained therein not misleading.

                  (h) All actions, approvals, consents, waivers, exemptions,
variances, franchises, orders, permits, authorizations, rights and licenses
required to be taken, given or obtained, as the case may be, by or from any
federal, state or other governmental authority or agency (other than any such
actions, approvals, etc. under any state securities laws, real estate
syndication or "Blue Sky" statutes, as to which the Sponsor makes no such
representation or



                                       46
<PAGE>   48


warranty), that are necessary or advisable in connection with the purchase and
sale of the Certificates and the execution and delivery by the Sponsor of the
Operative Documents to which it is a party, have been duly taken, given or
obtained, as the case may be, are in full force and effect on the date hereof,
are not subject and are not reasonably expected to be subject to any pending
proceedings or appeals (administrative, judicial or otherwise) and either the
time within which any appeal therefrom may be taken or review thereof may be
obtained has expired or no review thereof may be obtained or appeal therefrom
taken, and are adequate to authorize the consummation of the transactions
contemplated by this Agreement and the other Operative Documents on the part of
the Sponsor and the performance by the Sponsor of its obligations under this
Agreement and such of the other Operative Documents to which it is a party.

                  (i) The transactions contemplated by this Agreement are in the
ordinary course of business of the Sponsor.

                  (j) The Sponsor received fair consideration and reasonably
equivalent value in exchange for the sale of the interests in the Mortgage Loans
evidenced by the Certificates.

                  (k) The Sponsor did not sell any interest in any Mortgage Loan
evidenced by the Certificates with any intent to hinder, delay or defraud any of
its respective creditors.

                  (l) The Sponsor is solvent and the Sponsor will not be
rendered insolvent as a result of the sale of the Mortgage Loans to the Trust or
the issuance of the Certificates.

                  It is understood and agreed that the representations and
warranties set forth in this Section 3.1 shall survive delivery of the Mortgage
Loans to the Trust.

                  SECTION 3.2. REPRESENTATIONS AND WARRANTIES OF THE MASTER
SERVICER. The Master Servicer hereby represents, warrants and covenants to the
Trustee, the Certificate Insurer and the Owners as of the Startup Day that:

                  (a) The Master Servicer is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware,
is, and each Sub-Servicer is, in compliance with the laws of each state in which
any Property is located to the extent necessary to enable it to perform its
obligations hereunder and is in good standing as a foreign corporation in each
jurisdiction in which the nature of its business, or the properties owned or
leased by it make such qualification necessary. The Master Servicer and each
Sub-Servicer has all requisite corporate power and authority to own and operate
its properties, to carry out its business as presently conducted and as proposed
to be conducted and to enter into and discharge its obligations under this
Agreement and the other Operative Documents to which it is a party. The Master
Servicer has, on a consolidated basis with its parent, AMHC, equity of at least
$5,000,000, as determined in accordance with generally accepted accounting
principles.

                  (b) The execution and delivery of this Agreement by the Master
Servicer and its performance and compliance with the terms of this Agreement and
the other Operative Documents to which it is a party have been duly authorized
by all necessary corporate action on the part of the Master Servicer and will
not violate the Master Servicer's Articles of Incorporation or Bylaws or
constitute a default (or an event which, with notice or lapse of time, or both,
would constitute a default) under, or result in the breach of, any material
contract, agreement or other instrument to which the Master Servicer is a party
or by which the Master Servicer is bound or violate any statute or any order,
rule or regulation of any court, governmental agency or body or other tribunal
having jurisdiction over the Master Servicer or any of its properties.



                                       47
<PAGE>   49


                  (c) This Agreement and the other Operative Documents to which
the Master Servicer is a party, assuming due authorization, execution and
delivery by the other parties hereto and thereto, each constitutes a valid,
legal and binding obligation of the Master Servicer, enforceable against it in
accordance with the terms hereof, except as the enforcement hereof may be
limited by applicable bankruptcy, insolvency, reorganization, moratorium or
other similar laws affecting creditors' rights generally and by general
principles of equity (whether considered in a proceeding or action in equity or
at law).

                  (d) The Master Servicer is not in default with respect to any
order or decree of any court or any order, regulation or demand of any federal,
state, municipal or governmental agency, which might have consequences that
would materially and adversely affect the condition (financial or other) or
operations of the Master Servicer or its properties or might have consequences
that would materially and adversely affect its performance hereunder and under
the other Operative Documents to which the Master Servicer is a party.

                  (e) No litigation is pending or, to the best of the Master
Servicer's knowledge, threatened against the Master Servicer which litigation
might have consequences that would prohibit its entering into this Agreement or
any other Operative Document to which it is a party or might have consequences
that would materially and adversely affect its performance hereunder and under
the other Operative Documents to which the Master Servicer is a party.

                  (f) No certificate of an officer, statement furnished in
writing or report delivered pursuant to the terms hereof by the Master Servicer
contains any untrue statement of a material fact or omits to state any material
fact necessary to make the certificate, statement or report not misleading.

                  (g) The statements contained in the Registration Statement
which describe the Master Servicer or matters or activities for which the Master
Servicer is responsible in accordance with the Operative Documents or which are
attributed to the Master Servicer therein are true and correct in all material
respects, and the Registration Statement does not contain any untrue statement
of a material fact with respect to the Master Servicer or omit to state a
material fact required to be stated therein or necessary to make the statements
contained therein with respect to the Master Servicer not misleading. To the
best of the Master Servicer's knowledge and belief, the Registration Statement
does not contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
contained therein not misleading.

                  (h) [Reserved.]

                  (i) All actions, approvals, consents, waivers, exemptions,
variances, franchises, orders, permits, authorizations, rights and licenses
required to be taken, given or obtained, as the case may be, by or from any
federal, state or other governmental authority or agency (other than any such
actions, approvals, etc. under any state securities laws, real estate
syndication or "Blue Sky" statutes, as to which the Master Servicer makes no
such representation or warranty), that are necessary or advisable in connection
with the execution and delivery by the Master Servicer of the Operative
Documents to which it is a party, have been duly taken, given or obtained, as
the case may be, are in full force and effect on the date hereof, are not
reasonably expected to be subject to any pending proceedings or appeals
(administrative, judicial or otherwise) and either the time within which any
appeal therefrom may be taken or review thereof may be obtained has expired or
no review thereof may be obtained or appeal therefrom taken, and are adequate to
authorize the consummation of the transactions contemplated by this Agreement



                                       48
<PAGE>   50


and the other Operative Documents on the part of the Master Servicer and the
performance by the Master Servicer of its obligations under this Agreement and
such of the other Operative Documents to which it is a party.

                  (j) The collection practices used by the Master Servicer with
respect to the Mortgage Loans directly serviced by it have been, in all material
respects, legal, proper, prudent and customary in the mortgage loan servicing
business.

                  (k) The transactions contemplated by this Agreement are in the
ordinary course of business of the Master Servicer.

                  (l) The terms of each existing Sub-Servicing Agreement are
acceptable to the Master Servicer and any new Sub-Servicing Agreements or
Sub-Servicers will comply with the provisions of Section 8.3.

                  It is understood and agreed that the representations and
warranties set forth in this Section 3.2 shall survive delivery of the Mortgage
Loans to the Trustee.

                  Upon discovery by any of the Originators, the Master Servicer,
the Sponsor, any Sub-Servicer, the Certificate Insurer or the Trustee of a
breach of any of the representations and warranties set forth in this Section
3.2 which materially and adversely affects the interests of the Owners or of the
Certificate Insurer, the party discovering such breach shall give prompt written
notice to the other parties. Within 30 days of its discovery or its receipt of
notice of breach, the Master Servicer shall cure such breach in all material
respects and, upon the Master Servicer's continued failure to cure such breach,
may thereafter be removed by the Trustee or the Certificate Insurer pursuant to
Section 8.20 hereof; provided, however, that if the Master Servicer can
demonstrate to the reasonable satisfaction of the Certificate Insurer and the
Trustee that it is diligently pursuing remedial action, then the cure period may
be extended with the written approval of the Certificate Insurer and the
Trustee.

                  SECTION 3.3. REPRESENTATIONS AND WARRANTIES OF THE SPONSOR
WITH RESPECT TO THE MORTGAGE LOANS.

                  (a) The Sponsor makes the following representations and
warranties as to the Mortgage Loans on which the Certificate Insurer relies and
the Trustee relies in accepting the Mortgage Loans in trust and executing and
authenticating the Certificates. Such representations and warranties speak as of
the Startup Day with respect to the Initial Mortgage Loans, as of the Subsequent
Transfer Date with respect to any Subsequent Mortgage Loan, or as of the date
upon which any Qualified Replacement Mortgage is added to the Trust, but shall
survive the sale, transfer, and assignment of the Mortgage Loans to the Trustee:

                  (i) The information with respect to each Mortgage Loan set
         forth in the Schedule of Mortgage Loans is true and correct as of the
         Initial Cut-Off Date, the Replacement Cut-Off Date or the Subsequent
         Cut-Off Date, as the case may be;

                  (ii) All of the original or certified documentation set forth
         in Section 3.5 (including all material documents related thereto) with
         respect to each Mortgage Loan has been or will be delivered to the
         Trustee no later than the Startup Day, the related Subsequent Transfer
         Date or the date upon which any Qualified Replacement Mortgage is added
         to the Trust, as the case may be, or as otherwise provided in Section
         3.5;


                                       49
<PAGE>   51


                  (iii) Each Mortgage Loan is being serviced by the Master
         Servicer or Master Servicer Affiliate;

                  (iv) The Note related to each Mortgage Loan in Group I as of
         the Initial Cut-Off Date bears a Coupon Rate of at least 6.49% per
         annum;

                  (v) As of the Initial Cut-Off Date, no more than 2.91% of the
         aggregate principal balances of the Initial Mortgage Loans are 30-59
         days Delinquent and no Initial Mortgage Loan is 60 or more days'
         Delinquent;

                  (vi) As of the Initial Cut-Off Date, no more than 0.31% of the
         aggregate principal balances of the Mortgage Loans is secured by
         Properties located within any single zip code area and less than 13.79%
         of the aggregate Loan Balance of the Mortgage Loans consists of Date of
         Payment Loans or simple interest Mortgage Loans;

                  (vii) All of the Mortgage Loans conform, in all material
         respects, to the description thereof set forth in the Registration
         Statement;

                  (viii) The credit underwriting guidelines applicable to each
         Mortgage Loan conform in all material respects to the description
         thereof set forth in the Prospectus; and

                  (ix) Each Mortgage Loan is a Qualified Mortgage.

                  (b) The Sponsor hereby assigns to the Trustee for the benefit
of the Owners of the Certificates and the Certificate Insurer (so long as a
Certificate Insurer Default had not occurred and is continuing) all of its
right, title and interest in respect of each Master Transfer Agreement
applicable to the related Mortgage Loans. Insofar as such Master Transfer
Agreement provides for representations and warranties made by the related
Originator in respect of a Mortgage Loan and any remedies provided thereunder
for any breach of such representations and warranties, such right, title and
interest may be enforced by the Master Servicer or by the Trustee on behalf of
the Owners and the Certificate Insurer. Upon the discovery by the Sponsor, the
Master Servicer, the Certificate Insurer or the Trustee of a breach of any of
the representations and warranties made in a Master Transfer Agreement in
respect of any Mortgage Loan which materially and adversely affects the
interests of the Owners or of the Certificate Insurer in such Mortgage Loan, the
party discovering such breach shall give prompt written notice to the other
parties. The Master Servicer shall promptly notify the related Originator of
such breach and request that such Originator cure such breach or take the
actions described in Section 3.4(b) hereof within the time periods required
thereby, and if such Originator does not cure such breach in all material
respects, the Sponsor shall cure such breach or take such actions. The
obligations of the Sponsor or Master Servicer, as the case may be, set forth
herein with respect to any Mortgage Loan as to which such a breach has occurred
and is continuing shall constitute the sole obligations of the Master Servicer
and of the Sponsor in respect of such breach.

                  SECTION 3.4. COVENANTS OF SPONSOR TO TAKE CERTAIN ACTIONS WITH
RESPECT TO THE MORTGAGE LOANS IN CERTAIN SITUATIONS.

                  (a) With the provisos and limitations as to remedies set forth
in this Section 3.4, upon the discovery by any Originator, the Sponsor, the
Master Servicer, the Certificate Insurer, any Sub-Servicer or the Trustee that
the representations and warranties set forth in Section 3.3 of this Agreement or
in a Master Transfer Agreement were untrue in any material respect as of the
Startup Day (or the Subsequent Transfer Date, as the case may be) and such



                                       50
<PAGE>   52


breaches of the representations and warranties materially and adversely affect
the interests of the Owners or of the Certificate Insurer, the party discovering
such breach shall give prompt written notice to the other parties.

                  The Sponsor acknowledges that a breach of any representation
or warranty (x) relating to marketability of title sufficient to transfer
unencumbered title to a Mortgage Loan, (y) relating to enforceability of the
Mortgage Loan against the related Mortgagor or Property or (z) set forth in
clause (ix) of Section 3.3 above constitutes breach of a representation or
warranty which materially and adversely affects the interests of the Owners or
of the Certificate Insurer in such Mortgage Loan.

                  (b) Upon the earliest to occur of the Sponsor's discovery, its
receipt of notice of breach from any one of the other parties hereto or from the
Certificate Insurer or such time as a breach of any representation and warranty
materially and adversely affects the interests of the Owners or of the
Certificate Insurer as set forth above, the Sponsor hereby covenants and
warrants that it shall promptly cure such breach in all material respects or it
shall (or shall cause an affiliate of the Sponsor to or an Originator to),
subject to the further requirements of this paragraph, on the second Remittance
Date next succeeding such discovery or receipt of notice (i) substitute in lieu
of each Mortgage Loan in the related Mortgage Loan Group which has given rise to
the requirement for action by the Sponsor a Qualified Replacement Mortgage and
deliver the Substitution Amount applicable thereto, together with the aggregate
amount of all Delinquency Advances and Servicing Advances theretofore made with
respect to such Mortgage Loan and not previously reimbursed to the Master
Servicer for deposit in the Principal and Interest Account or (ii) purchase such
Mortgage Loan from the REMIC Trust at a purchase price equal to the Loan
Purchase Price thereof, which purchase price shall be delivered to the Master
Servicer for deposit in the Principal and Interest Account. In connection with
any such proposed purchase or substitution, the Sponsor at its expense, shall
cause to be delivered to the Trustee and the Certificate Insurer an opinion of
counsel experienced in federal income tax matters stating whether or not such a
proposed purchase or substitution would constitute a Prohibited Transaction for
the REMIC Trust or would jeopardize the status of the REMIC Trust as a REMIC,
and the Sponsor shall only be required to take either such action to the extent
such action would not constitute a Prohibited Transaction for the REMIC Trust or
would not jeopardize the status of the REMIC Trust as a REMIC. Any required
purchase or substitution, if delayed by the absence of such opinion shall
nonetheless occur upon the earlier of (i) the occurrence of a default or
imminent default with respect to the Mortgage Loan, (ii) the delivery of such
opinion or (iii) at the direction of the Control Party. It is understood and
agreed that the obligation of the Sponsor to cure the defect, or substitute for,
or purchase any Mortgage Loan as to which a representation or warranty is untrue
in any material respect and has not been remedied shall constitute the sole
remedy available to the Owners, the Trustee and the Certificate Insurer.

                  (c) In the event that any Qualified Replacement Mortgage is
delivered by an Originator or by the Sponsor (or by an affiliate of the Sponsor,
as the case may be) to the Trust pursuant to Section 3.3, Section 3.4 or Section
3.6 hereof, the related Originator and the Sponsor shall be obligated to take
the actions described in Section 3.4(b) with respect to such Qualified
Replacement Mortgage upon the discovery by any of the Owners, the Sponsor, the
Master Servicer, the Certificate Insurer, any Sub-Servicer or the Trustee that
the representations and warranties set forth in the related Master Transfer
Agreement or in Section 3.3 above are untrue in any material respect on the date
such Qualified Replacement Mortgage is conveyed to the Trust such that the
interests of the Owners or the Certificate Insurer in the related Qualified
Replacement Mortgage are materially and adversely affected.


                                       51
<PAGE>   53


                  (d) In the event that any Qualified Replacement Mortgage is
delivered to the Trust, such Qualified Replacement Mortgage must be a Mortgage
Loan which: (i) bears a fixed rate of interest if the Mortgage Loan being
replaced is in Group I and bears an adjustable rate of interest if the Mortgage
Loan to be replaced is in Group II, (ii) has a Coupon Rate at least equal to the
Coupon Rate of the Mortgage Loan being replaced, (which, in the case of a
Mortgage Loan in Group II, shall mean a Mortgage Loan having the same interest
rate index, a margin over such index and a maximum interest rate equal to or
greater than those applicable to the Mortgage Loan being replaced), (iii) is of
the same or better property type and the same or better occupancy status as the
replaced Mortgage Loan, (iv) shall be of the same or better credit quality
classification (determined in accordance with the Originators' credit
underwriting guidelines) as the Mortgage Loan being replaced, (v) shall mature
no later than September 25, 2029, (vi) has a Combined Loan-to-Value Ratio as of
the Replacement Cut-Off Date no higher than the Combined Loan-to-Value Ratio of
the replaced Mortgage Loan at such time, (vii) has a Loan Balance as of the
related Replacement Cut-Off Date equal to or less than the Loan Balance of the
replaced Mortgage Loans as of such Replacement Cut-Off Date, (viii) satisfies
all of the representations and warranties set forth in Section 3.3 and the
criteria set forth from time to time in the definition thereof at Section
860G(a)(4) of the Code (or any successor statute thereto) and applicable to the
Trust, all as evidenced by an Officer's Certificate of the Sponsor delivered to
the Certificate Insurer, the Sponsor and the Trustee prior to any such
substitution and (ix) is a valid First Mortgage Loan if the Mortgage Loan to be
substituted for is a valid First Mortgage Loan or, Junior Mortgage Loan of equal
or better priority if the Mortgage Loan to be substituted for is a Junior
Mortgage Loan. In the event that one or more mortgage loans are proposed to be
substituted for one or more mortgage loans, the Certificate Insurer may allow
the foregoing tests to be met on a weighted average basis with respect to the
Mortgage Loans only or other aggregate basis acceptable to the Certificate
Insurer, as evidenced by a written consent delivered to the Trustee by the
Certificate Insurer, except that the requirement of clause (viii) hereof must be
satisfied as to each Qualified Replacement Mortgage.

                  (e) As to each Mortgage Loan released from the Trust in
connection with the conveyance of a Qualified Replacement Mortgage therefor, the
Trustee will transfer, sell, assign, set over and otherwise convey without
recourse, all of its right, title and interest in and to such released Mortgage
Loan and all the Trust's right, title and interest to principal collected and
interest accruing on such released Mortgage Loan on and after the applicable
Replacement Cut-Off Date; provided, however, that the Trust shall reserve and
retain all right, title and interest in and to payments of principal collected
and accrued interest on such released Mortgage Loan prior to the applicable
Replacement Cut-Off Date.

                  (f) In connection with any transfer and assignment of a
Qualified Replacement Mortgage to the Trustee on behalf of the Trust, the
Sponsor agrees to cause to be delivered to the Trustee the items described in
Section 3.5(c) on the date of such transfer and assignment or, if a later
delivery time is permitted by Section 3.5(c), then no later than such later
delivery time.

                  (g) As to each Mortgage Loan released from the Trust in
connection with the conveyance of a Qualified Replacement Mortgage the Trustee
shall deliver, on the date of conveyance of such Qualified Replacement Mortgage,
on the order of the Sponsor (i) the original Note, or the certified copy,
relating thereto, endorsed without recourse, to the Sponsor and (ii) such other
documents as constituted the File with respect thereto.


                                       52
<PAGE>   54


                  (h) The Sponsor shall, in connection with the delivery of each
Qualified Replacement Mortgage to the Trustee, provide the Trustee with the
information set forth in the Schedules of Mortgage Loans with respect to such
Qualified Replacement Mortgage.

                  (i) It is understood and agreed that the covenants set forth
in this Section 3.4 shall survive delivery of the respective Mortgage Loans
(including Qualified Replacement Mortgages) to the Trustee.

                  SECTION 3.5. CONVEYANCE OF THE MORTGAGE LOANS.

                  (a) The Sponsor, concurrently with the execution and delivery
hereof, hereby transfers, sells, assigns, sets over and otherwise conveys, or
shall request or cause to be transferred, sold, assigned, set over and otherwise
conveyed, without recourse, for good and valuable consideration, to the Trustee,
all right, title and interest of the Sponsor and the Warehouse Trusts in and to
each Initial Mortgage Loan, including all right, title and interest in and to
principal collected and interest accruing on each such Initial Mortgage Loan on
and after the Initial Cut-Off Date and all right, title and interest in and to
all Mortgage Insurance Policies and any other assets included or to be included
in the Trust for the benefit of Owners and the Certificate Insurer. The transfer
of the Initial Mortgage Loans set forth on the Schedule of Mortgage Loans to the
Trustee is absolute and is intended by the Owners and all parties hereto to be
treated as a sale by the Sponsor or the Warehouse Trusts.

                  (b) The Sponsor agrees to take or cause to be taken such
actions and execute such documents as are necessary to perfect and protect the
Owners' and the Certificate Insurer's interests in each Mortgage Loan and the
proceeds thereof (including, without limitation, the filing of all necessary
continuation statements for the UCC-1 financing statements filed in the
appropriate jurisdictions (which shall have been filed within 90 days of the
Startup Day or the Subsequent Transfer Date, as the case may be)) and to file in
the appropriate jurisdictions any amendments to UCC-1 financing statements
required to reflect a change in the name or corporate structure of the debtor or
the filing of any additional UCC-1 financing statements due to a change in the
principal office of the debtor (within 90 days of any event necessitating such
filing).

                  (c) In connection with the transfer and assignment of the
Mortgage Loans, the Sponsor agrees to:

                  (i) cause to be delivered to the Trustee, without recourse, no
         later than the Startup Day or any Subsequent Transfer Date or date on
         which a Qualified Replacement Mortgage is transferred, as applicable,
         the items listed in the definitions of "Advanta Mortgage Files" and
         "Conduit Mortgage Files," as appropriate; provided that the assignments
         of mortgage listed in such definitions shall be delivered to the
         Trustee with respect to the Designated Advanta Mortgage Files within 75
         Business Days of the Startup Day, any Subsequent Transfer Date or date
         on which a Qualified Replacement Mortgage is transferred, as
         applicable.

                  (ii) cause, within 75 Business Days following the Startup Day,
         any Subsequent Transfer Date or date on which a Qualified Replacement
         Mortgage is transferred, as applicable, the assignments of Mortgage to
         be submitted for recording in the appropriate jurisdictions wherein
         such recordation is necessary to perfect the lien thereof as against
         creditors of or purchasers from the related Originator to the Trustee;
         provided, however, that, for administrative convenience and
         facilitation of servicing and to reduce closing costs, assignments of
         mortgage shall not be required to be submitted for



                                       53
<PAGE>   55


         recording with respect to any Mortgage Loan which relates to an Advanta
         Mortgage File only if the Trustee, the Certificate Insurer and each
         Rating Agency has received an Opinion of Counsel, satisfactory in form
         and substance to the Certificate Insurer and to each Rating Agency, to
         the effect that the recordation of such assignments in any specific
         jurisdiction is not necessary to protect the Trustee's interest in the
         related Mortgage.

                  All recording required pursuant to this Section 3.5 shall be
accomplished at the expense of the Originators or of the Sponsor.
Notwithstanding anything to the contrary contained in this Section 3.5, in those
instances where the public recording office retains the original Mortgage, the
assignment of a Mortgage or the intervening assignments of the Mortgage after it
has been recorded, the Sponsor shall be deemed to have satisfied its obligations
hereunder upon delivery to the Trustee of a copy of such Mortgage, such
assignment or assignments of Mortgage certified by the public recording office
to be a true copy of the recorded original thereof.

                  Copies of all Mortgage assignments received by the Trustee
shall be kept in the related Mortgage Loan file.

                  Such assignments of mortgage shall, in addition to the
requirements specified in the definition of "Advanta Mortgage Files" and
"Conduit Mortgage Files," as appropriate, be in recordable form. On or before
the Startup Day, any Subsequent Transfer Date or date on which a Qualified
Replacement Mortgage is transferred, as applicable, the Sponsor shall deliver to
the Trustee an original executed power of attorney, from the current
recordholders of the related Mortgage substantially in the form of Exhibit G,
authorizing the Master Servicer on behalf of the Trustee to record the
assignments of mortgage as provided in clause (ii) above. Pursuant to such power
of attorney, the Trustee also may execute a new assignment of mortgage for any
Mortgage Loan if the original assignment of mortgage delivered by the Sponsor to
the Trustee is not in recordable form at such time as the assignment of mortgage
is to be recorded by the Trustee.

                  (d) [Reserved]

                  (e) The Sponsor (or any Warehouse Trust, or any affiliate of
the Sponsor) shall transfer, sell, assign, set over and otherwise convey without
recourse, to the Trustee all right, title and interest of the Sponsor (or any
Warehouse Trust or of such affiliate) in and to any Qualified Replacement
Mortgage delivered to the Trustee pursuant to Section 3.3, Section 3.4 or
Section 3.6 hereof and all its right, title and interest to principal collected
and interest accruing on such Qualified Replacement Mortgage on and after the
applicable Replacement Cut-Off Date; provided, however, that the Sponsor (or
such affiliate) shall reserve and retain all right, title and interest in and to
payments of principal due and interest accrued on such Qualified Replacement
Mortgage prior to the applicable Replacement Cut-Off Date.

                  (f) If a Mortgage assignment is lost during the process of
recording, or is returned from the recorder's office unrecorded due to a defect
therein, the Sponsor shall prepare a substitute assignment or cure such defect,
as the case may be, and thereafter cause each such assignment to be duly
recorded.

                  (g) The Sponsor shall cause to be reflected on the applicable
records that the Mortgage Loans have been sold to the Trust.

                  To the extent that the ratings, if any, then assigned to the
unsecured debt of the Sponsor or of the Sponsor's ultimate corporate parent are
satisfactory to the Control Party, Standard and Poor's and Moody's, then any of
the Document Delivery Requirements described



                                       54
<PAGE>   56


above may be waived by an instrument signed by the Control Party, Standard &
Poor's and Moody's (or any documents theretofore delivered to the Trustee
returned to the Sponsor) on such terms and subject to such conditions as the
Control Party, Standard & Poor's and Moody's may permit.

                  (h) It is the express intent of the parties hereto that the
conveyance of the Mortgage Loans (including all other rights and properties
described in Section 3.5(a) above) to the Trust be construed as a sale of the
Mortgage Loans to the Trust. It is, further, not the intent of the parties that
such conveyance be deemed a pledge of the Mortgage Loans to the Trust to secure
a debt or other obligation of the Sponsor, any Warehouse Trust or any of their
respective assignors. However, in the event and to the extent that,
notwithstanding the intent of the parties hereto, any or all of the Mortgage
Loans (including the other rights and properties described in Section 3.5(a)
above) are held to be property of the Sponsor or any Warehouse Trust or any of
their respective assignors, then

                  (i)      this Agreement shall also be deemed to be a security
                           agreement within the meaning of Article 9 of the New
                           York UCC;

                  (ii)     the conveyance provided for herein shall be deemed to
                           be a grant by the Sponsor and the Warehouse Trusts to
                           the Trust of a first priority security interest in
                           all of the Sponsor's and the Warehouse Trusts' right,
                           title and interest in and to the Mortgage Loans
                           (including the other rights and properties described
                           in Section 3.5(a) above) and all amounts payable to
                           the holder of the Mortgage Loans and/or such rights
                           or properties in accordance with the terms thereof
                           and all proceeds of the conversion, voluntary or
                           involuntary, of the foregoing into cash, instruments,
                           securities or other property, including all amounts
                           from time to time held or invested in any Account,
                           whether in the form of cash, instruments, securities
                           or other property;

                  (iii)    the possession by the Trustee or its bailees or
                           agents of items of property that constitute
                           instruments, money, negotiable documents or chattel
                           paper shall be deemed to be "possession by the
                           secured party" for purposes of perfecting the
                           security interest pursuant to Section 9-305 of the
                           New York UCC;

                  (iv)     notifications to persons holding such property, and
                           acknowledgments, receipts or confirmations from
                           persons holding such property, shall be deemed
                           notifications to, or acknowledgments, receipts or
                           confirmations from, financial intermediaries, bailees
                           or agents (as applicable) of the Trustee for the
                           purpose of perfecting such security interest under
                           applicable law; and

                  (v)      the obligations secured by the first priority
                           security interest described in clause (iii) above
                           shall be deemed to include any and all obligations of
                           the Trust to pay the principal of and interest on the
                           Certificates to the Owners and to pay the fees,
                           expenses and other amounts required to be paid to the
                           Master Servicer, the Trustee, the Certificate Insurer
                           and the Owners, all in accordance with and otherwise
                           subject to the Operative Documents.


                                       55
<PAGE>   57


                  Any assignment or other transfer of the interest of the
Trustee under any provision hereof shall also be deemed to be an assignment of
any security interest created hereby. Each of the Sponsor, the Warehouse Trusts
and the Master Servicer shall, to the extent consistent with this Agreement,
take such actions as may be necessary to ensure that, if this Agreement were
deemed to create a security interest in the Mortgage Loans, such security
interest would be deemed to be a perfected security interest of first priority
under applicable law and would be maintained as such throughout the terms of
this Agreement. The Sponsor also covenants not to pledge, assign or grant any
security interest to any third party in any Mortgage Loan conveyed to the
Trustee hereunder.

                  Upon the Trustee's or the Certificate Insurer's request, the
Sponsor shall perform (or cause to be performed) such further acts and execute,
acknowledge and deliver (or cause to be executed, acknowledged and delivered) to
the Trustee such further documents as the Trustee or the Certificate Insurer
shall deem necessary or advisable in order to evidence, establish, maintain,
protect, enforce or defend its rights in and to the Mortgage Loans and other
rights and properties transferred hereunder or otherwise to carry out the intent
and accomplish the purposes of this Agreement (including UCC-1 financing
statements naming the Sponsor as debtor and the Trustee as secured party and any
continuation statements relating thereto).

                  SECTION 3.6. ACCEPTANCE BY TRUSTEE; CERTAIN SUBSTITUTIONS OF
MORTGAGE LOANS; CERTIFICATION BY TRUSTEE.

                  (a) The Trustee agrees to execute and deliver on the Startup
Day, on any Subsequent Transfer Date and any day on which a Qualified
Replacement Mortgage is conveyed to the Trust an acknowledgment of receipt in
the form attached as Exhibit C hereto of the Mortgage Files delivered by the
Sponsor, and declares that it will hold such documents and any amendments,
replacement or supplements thereto, as well as any other assets included in the
definition of Trust Estate and delivered to the Trustee, as Trustee in trust
upon and subject to the conditions set forth herein for the benefit of the
Owners and the Certificate Insurer. On or before the tenth Business Day after
the Startup Day, any Subsequent Transfer Date, and any day on which a Qualified
Replacement Mortgage is conveyed to the Trust, the Trustee shall execute and
deliver to the Certificate Insurer and the Master Servicer an acknowledgment of
receipt of the original Notes for each Mortgage Loan.

                  The Trustee further agrees to review any documents delivered
by the Sponsor within 90 days after the Startup Day (or within 90 days with
respect to any Subsequent Mortgage Loan or Qualified Replacement Mortgage after
the assignment thereof) and to deliver to the Sponsor, the Certificate Insurer
and the Master Servicer a Certification in the form attached as Exhibit D
hereto. The Trustee shall be under no duty or obligation to inspect, review or
examine any such documents, instruments, certificates or other papers to
determine that they are genuine, enforceable, or appropriate for the represented
purpose or that they are other than what they purport to be on their face, nor
shall the Trustee be under any duty to determine independently whether there are
any intervening assignments or assumption or modification agreements with
respect to any Mortgage Loan.

                  (b) If the Trustee during such 90-day period finds any
document constituting a part of a Mortgage File which (i) is not properly
executed, (ii) has not been received within the specified period, (iii) is
unrelated to the Mortgage Loans identified in the Schedules of Mortgage Loans,
or (iv) that any Mortgage Loan does not conform in a material respect to the
description thereof as set forth in the Schedules of Mortgage Loans, the Trustee
shall promptly so notify the Sponsor and the Certificate Insurer. In performing
any such review, the Trustee may


                                       56
<PAGE>   58


conclusively rely on the Sponsor as to the purported genuineness of any such
document and any signature thereon. The Sponsor agrees to use reasonable efforts
to remedy a material defect in a document constituting part of a Mortgage File
of which it is so notified by the Trustee. If, however, within 60 days after the
Trustee's notice respecting such defect the Sponsor has not remedied or caused
to be remedied the defect and the defect materially and adversely affects the
interest of the Owners or of the Certificate Insurer in the related Mortgage
Loan, the Sponsor will (or will cause the related Originator or an affiliate of
the Sponsor to) on the next succeeding Remittance Date (i) substitute in lieu of
such Mortgage Loan a Qualified Replacement Mortgage and, deliver the
Substitution Amount or (ii) purchase such Mortgage Loan at a purchase price
equal to the Loan Purchase Price thereof, which purchase price shall be
delivered to the Master Servicer for deposit in the Principal and Interest
Account. In connection with any such proposed purchase or substitution the
Sponsor shall cause at the Sponsor's expense to be delivered to the Trustee and
the Certificate Insurer an opinion of counsel experienced in federal income tax
matters stating whether or not such a proposed purchase or substitution would
constitute a Prohibited Transaction for the Upper-Tier REMIC or Lower-Tier REMIC
or would jeopardize the status of the Upper-Tier REMIC or Lower-Tier REMIC as a
REMIC, and the Sponsor shall only be required to take either such action to the
extent such action would not constitute a Prohibited Transaction for the
Upper-Tier REMIC or Lower-Tier REMIC or would not jeopardize the status of the
Upper-Tier REMIC or Lower-Tier REMIC as a REMIC. Any required purchase or
substitution, if delayed by the absence of such opinion shall nonetheless occur
upon the earlier of (i) the occurrence of a default or imminent default with
respect to the Mortgage Loan or (ii) the delivery of such opinion or (iii) at
the direction of the Control Party.

                  Upon receipt of any Qualified Replacement Mortgage or of
written notification signed by a Servicing Officer to the effect that the Loan
Purchase Price in respect of such Mortgage Loan has been deposited into the
Principal and Interest Account, then as promptly as practicable, the Trustee
shall execute such documents and instruments of transfer presented by the
Sponsor, in each case without recourse, representation or warranty, and take
such other actions as shall reasonably be requested by the Sponsor to effect
such transfer by the Trust of such Mortgage Loan pursuant to this Section. It is
understood and agreed that the obligation of the Sponsor to accept a transfer of
a Mortgage Loan and to either convey a Qualified Replacement Mortgage or to make
a deposit of any related Loan Purchase Price into the Principal and Interest
Account shall constitute the sole remedy respecting such defect available to
Owners, the Trustee and the Certificate Insurer against the Sponsor.

                  The Sponsor, promptly following the transfer of a Mortgage
Loan from or to the Trust pursuant to this Section, shall deliver an amended
Schedule of Mortgage Loans to the Trustee and the Certificate Insurer and shall
make appropriate entries in its general account records to reflect such
transfer. The Master Servicer shall, following such retransfer, appropriately
mark its records to indicate that it is no longer servicing such Mortgage Loan
on behalf of the Trust.

                  (c) As to any Qualified Replacement Mortgage, the Sponsor
shall deliver to the Trustee with respect to such Qualified Replacement Mortgage
such documents and agreements as are required to be held by the Trustee in
accordance with Section 3.6. For any Remittance Period during which the Sponsor
substitutes one or more Qualified Replacement Mortgages, the Master Servicer
shall determine the Substitution Amount, which amount shall be deposited by the
Sponsor in the Principal and Interest Account at the time of substitution. All
amounts received in respect of the Qualified Replacement Mortgage during the
Remittance Period in which the circumstances giving rise to such substitution
occur shall not be a part of the Trust Estate and shall not be deposited by the
Master Servicer in the Principal and Interest



                                       57
<PAGE>   59


Account. All amounts received by the Master Servicer during the Remittance
Period in which the circumstances giving rise to such substitution occur in
respect of any Mortgage Loan so removed by the Trust Estate shall be deposited
by the Master Servicer in the Principal and Interest Account. Upon such
substitution, each Qualified Replacement Mortgage shall be subject to the terms
of this Agreement in all respects, and the Sponsor shall be deemed (i) to have
made with respect to such Qualified Replacement Mortgage, as of the date of
substitution, the covenants, representations and warranties set forth in Section
3.3 and (ii) to have certified that such Mortgage Loan(s) is/are Qualified
Replacement Mortgage(s).

                  SECTION 3.7. COOPERATION PROCEDURES.

                  (a) The Sponsor, the Master Servicer and the Trustee covenant
to provide each other and to the Certificate Insurer with all data and
information required to be provided by them hereunder at the times required
hereunder, and additionally covenant reasonably to cooperate with each other in
providing any additional information required by any of them in connection with
their respective duties hereunder.

                  SECTION 3.8. CONVEYANCE OF THE SUBSEQUENT MORTGAGE LOANS.

                  (a) On any Subsequent Transfer Date, subject to the conditions
set forth in paragraph (b) below in consideration of the Trustee's delivery of
all or a portion of the balance of funds in the Pre-Funding Account the Sponsor
shall sell, transfer, assign, set over and otherwise convey, or shall request or
cause the Trust to acquire from a Warehouse Trust all right, title and interest
in and to each Subsequent Mortgage Loan listed on the Schedule of Mortgage Loans
delivered by the Sponsor to the Trustee on such Subsequent Transfer Date, all
right, title and interest in and to principal collected and interest accrued on
each such Subsequent Mortgage Loan on and after the related Subsequent Cut-Off
Date and all right, title and interest in and to all Mortgage Insurance
Policies; provided, however, that the Sponsor reserves and retains all its
right, title and interest in and to principal collected and interest accrued on
each such Subsequent Mortgage Loan prior to the related Subsequent Cut-Off Date
and provided, further, that the Subsequent Mortgage Loans shall be assigned only
to Group I. The transfer to the Trust of the Subsequent Mortgage Loans set forth
on the Schedule of Mortgage Loans shall be absolute and shall be intended by the
Sponsor, the Owners and all parties hereto to be treated as a sale.

                  The amount released from the Pre-Funding Account shall be
equal to the aggregate Loan Balances of the Subsequent Mortgage Loans so
transferred, and in no event shall the Sponsor or any Warehouse Trust transfer
to the Trust Subsequent Mortgage Loans having an aggregate Loan Balance in
excess of the Group I Original Pre-Funded Amount.

                  (b) The Sponsor shall transfer or cause to be transferred to
the Trust the Subsequent Mortgage Loans and the other property and rights
related thereto described in paragraph (a) above only upon the satisfaction of
each of the following conditions on or prior to the related Subsequent Transfer
Date.

                           (i) the Sponsor shall have provided the Trustee, the
         Certificate Insurer, Moody's and Standard & Poor's with an Addition
         Notice and information in an electronic data file with respect to the
         Subsequent Mortgage Loans;

                           (ii) the Sponsor shall have delivered to the Trustee
         a duly executed written assignment (including an acceptance by the
         Trustee) in substantially the form of Exhibit J (the "Subsequent
         Transfer Agreement"), which shall include a Schedule of



                                       58
<PAGE>   60


         Mortgage Loans listing the Subsequent Mortgage Loans and any other
         exhibits listed thereon;

                           (iii) prior to the first Remittance Date following
         the related Subsequent Transfer Date, the Sponsor shall have deposited
         in the Principal and Interest Account all principal collected and
         interest accrued (excluding premium recapture and interest accrued
         prior to the related Subsequent Cut-Off Date) in respect of the
         Subsequent Mortgage Loans on or after the related Subsequent Cut-Off
         Date;

                           (iv) as of each Subsequent Transfer Date, none of the
         related Affiliated Originators, the Master Servicer or the Sponsor was
         insolvent nor will any of them have been made insolvent by such
         transfer nor is any of them aware of any pending insolvency;

                           (v) such conveyance of Subsequent Mortgage Loans will
         not result in a material adverse tax consequence to the Trust or the
         Owners of the Certificates;

                           (vi) the Pre-Funding Period shall not have
         terminated;

                           (vii) the Sponsor shall have delivered to the Trustee
         an Officer's Certificate confirming (A) the satisfaction of each
         condition precedent specified in this paragraph (b) and paragraphs (c)
         and (d) below, and in the related Subsequent Transfer Agreement and (B)
         confirming that (i) neither the sale of the Subsequent Mortgage Loans
         nor the purchase of the Subsequent Mortgage Loans by the Trust
         constitutes a "prohibited transaction", as defined in Section
         860F(a)(2) of the Code, and (ii) the Subsequent Mortgage Loans are
         Qualified Mortgages;

                           (viii) the Rating Agencies, the Certificate Insurer,
         and the Trustee shall have received, Opinions of Counsel with respect
         to certain tax, true sale, and bankruptcy matters related to the
         transfer of the Subsequent Mortgage Loans (which Opinions of Counsel
         may be delivered on the Startup Day); and

                           (ix) the Certificate Insurer shall have approved the
         transfer.

                  (c) The obligation of the Trust to purchase a Subsequent
Mortgage Loan on any Subsequent Transfer Date is subject to the following
requirements (x) for each Subsequent Mortgage Loan as of the related Subsequent
Transfer Date: (i) no Subsequent Mortgage Loan may be 30 or more days
contractually delinquent as of the related Subsequent Cut-Off Date; (ii) the
remaining term to maturity may not exceed 30 years; (iii) the combined
loan-to-value ratio ("CLTV") is not in excess of 100%; (iv) the Loan Balance is
not in excess of $500,000; (v) was not originated by an Unaffiliated Originator;
and (y) following the purchase of such Subsequent Mortgage Loans by the Trust,
the Mortgage Loans in Group I (by the aggregate Loan Balance) (including the
Subsequent Mortgage Loans) (a) will have a weighted average Coupon Rate of at
least 9.60%; (b) will have a weighted average CLTV of not more than 77.0%; (c)
will have not less than 91.0%, that are considered "fully documented" loans; (d)
will have not less than 87.0%, Mortgage Loans that are related to single family
detached residences; (e) will have at least 96.0% Mortgage Loans which are first
lien mortgages, (f) will have at least 77.0% Mortgage Loans which are classified
"A-" or better, (g) will have not more than 9.0% Mortgage Loans that are
classified "C"; (h) will have not more than 2.0% Mortgage Loans that are
classified "D"; (i) no more than 43.0% Mortgage Loans will have a CLTV of
greater than 80.0%. The Certificate



                                       59
<PAGE>   61


Insurer may waive or modify any of the above requirements or specify any
additional criteria provided that any such modification shall not materially and
adversely affect the Sponsor.

                  (d) In connection with the transfer and assignment of the
Subsequent Mortgage Loans, the Sponsor agrees to satisfy the conditions set
forth in Sections 3.5(b)-(j), 3.6, 3.7 and 3.8(b)-(c).


                                   ARTICLE IV

                        ISSUANCE AND SALE OF CERTIFICATES

                  SECTION 4.1. ISSUANCE OF CERTIFICATES. On the Startup Day,
upon the Trustee's receipt from the Sponsor of an executed Delivery Order in the
form set forth as Exhibit E hereto, the Trustee shall execute, authenticate and
deliver the Certificates on behalf of the Trust in accordance with the
directions set forth in such Delivery Order.

                  SECTION 4.2. SALE OF CERTIFICATES. At 11 a.m. New York City
time on the Startup Day, at the offices of Dewey Ballantine, 1301 Avenue of the
Americas, New York, New York, the Sponsor will sell and convey the Initial
Mortgage Loans and the money, instruments and other property related thereto to
the Trustee on behalf of the Trust, and the Trustee will (i) deliver to the
Representative, the Group I Certificates and the Group II Certificates with an
aggregate Percentage Interest in each Class equal to 100%, registered in the
name of Cede & Co. or in such other names as the Representative shall direct,
against payment of the purchase price thereof by wire transfer of immediately
available funds to the Trustee; (ii) deliver to the Trustee, the Class B
Certificate with an aggregate Percentage Interest equal to 100%, registered in
the name of the Trustee on behalf of the Supplemental Interest Payment Account;
(iii) deliver to the Sponsor, the Class BS Certificates, the Class R
Certificates and the Class RL Certificates in each case with an aggregate
Percentage Interest equal to 100%, registered in such names as the Sponsor shall
request; and (iv) deliver to the Trustee on behalf of the Owners of the
Supplemental Interest Right, the certificate representing the Supplemental
Interest Right. Upon receipt of the proceeds of the sale of the Certificates,
the Trustee shall, from the proceeds of the sale of the Certificates, pay other
fees and expenses identified by the Sponsor, deposit the Group I Original
Pre-Funded Amount into the Pre-Funding Account, deposit the Group I Capitalized
Interest Deposit into the Capitalized Interest Account and pay to the Sponsor
the balance after deducting such amounts.


                                   ARTICLE V

                     CERTIFICATES AND TRANSFER OF INTERESTS

                  SECTION 5.1. TERMS.

                  (a) The Certificates are pass-through securities having the
rights described therein and herein. Notwithstanding references herein or
therein with respect to the Certificates as to "principal" and "interest" no
debt of any Person is represented thereby, nor are the Certificates or the
underlying Notes guaranteed by any Person (except that the Notes may be recourse
to the Mortgagors thereof to the extent permitted by law and except for the
rights of the Trustee with respect to the Certificate Insurance Policy).
Distributions on the Certificates are payable solely from payments received on
or with respect to the Mortgage Loans (other than the Servicing Fees), monies in
the Principal and Interest Account, the Pre-Funding Account, the



                                       60
<PAGE>   62


Capitalized Interest Account and, with respect to the Class A-1 and A-7
Certificates, the Supplemental Interest Payment Account, except as otherwise
provided herein, from earnings on monies and the proceeds of property held as a
part of the Trust Estate and, from Insured Payments. Each Certificate entitles
the Owner thereof to receive monthly, on each Payment Date, in order of priority
of distributions with respect to such Class of Certificates, a specified portion
of such payments with respect to the Mortgage Loans in the related Mortgage Loan
Group and Insured Payments, pro rata in accordance with such Owner's Percentage
Interest and, with respect to the Class A-1 and A-7 Certificates, certain
amounts payable from the Supplemental Interest Payment Account.

                  (b) Each Owner is required, and hereby agrees, to return to
the Trustee any Certificate with respect to which the Trustee has made the final
distribution due thereon. Any such Certificate as to which the Trustee has made
the final distribution thereon shall be deemed cancelled and shall no longer be
Outstanding for any purpose of this Agreement, whether or not such Certificate
is ever returned to the Trustee.

                  SECTION 5.2. FORMS. The Certificates shall be in substantially
the forms set forth in Exhibit A hereof with such appropriate insertions,
omissions, substitutions and other variations as are required or permitted by
this Agreement or as may in the Sponsor's judgment be necessary, appropriate or
convenient to comply, or facilitate compliance, with applicable laws, and may
have such letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
applicable securities laws or as may, consistently herewith, be determined by
the Authorized Officer of the Sponsor executing such Delivery Order, as
evidenced by his execution thereof.

                  SECTION 5.3. EXECUTION, AUTHENTICATION AND DELIVERY. Each
Certificate shall be executed on behalf of the Trust, by the manual signature of
one of the Trustee's Authorized Officers and shall be authenticated by the
manual signature of one of the Trustee's Authorized Officers.

                  (a) Certificates bearing the manual signature of individuals
who were at any time the proper officers of the Trustee shall, upon proper
authentication by the Trustee, bind the Trust, notwithstanding that such
individuals or any of them have ceased to hold such offices prior to the
execution and delivery of such Certificates or did not hold such offices at the
date of authentication of such Certificates.

                  (b) The initial Certificates shall be dated as of the Startup
Day and delivered at the Closing to the parties specified in Section 4.2 hereof.

                  (c) No Certificate shall be valid until executed and
authenticated as set forth above.

                  SECTION 5.4. REGISTRATION AND TRANSFER OF CERTIFICATES.

                  (a) The Trustee, as registrar, shall cause to be kept a
register (the "Register") in which, subject to such reasonable regulations as it
may prescribe, the Trustee shall provide for the registration of Certificates
and the registration of transfer of Certificates. The Trustee is hereby
appointed registrar for the purpose of registering Certificates and transfers of
Certificates as herein provided. The Owners and the Certificate Insurer shall
have the right to inspect the Register at all reasonable times and to obtain
copies thereof.


                                       61
<PAGE>   63


                  (b) Subject to the provisions of Section 5.8 hereof, upon
surrender for registration of transfer of any Certificate at the office
designated as the location of the Register, the Trustee shall execute,
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Certificates of a like Class and in the aggregate
principal amount of the Certificate so surrendered.

                  (c) At the option of any Owner, Certificates of any Class
owned by such Owner may be exchanged for other Certificates authorized of like
Class, tenor and a like aggregate original principal amount and bearing numbers
not contemporaneously outstanding, upon surrender of the Certificates to be
exchanged at the office designated as the location of the Register. Whenever any
Certificate is so surrendered for exchange, the Trustee shall execute,
authenticate and deliver the Certificate or Certificates which the Owner making
the exchange is entitled to receive.

                  (d) Certificates issued upon any registration of transfer or
exchange of Certificates shall be valid evidence of the same ownership interests
in the Trust and entitled to the same benefits under this Agreement as the
Certificates surrendered upon such registration of transfer or exchange.

                  (e) Any Certificate presented or surrendered for registration
of transfer or exchange shall be duly endorsed, or be accompanied by a written
instrument of transfer in form satisfactory to the Trustee duly executed by the
Owner thereof or his attorney duly authorized in writing.

                  (f) No service charge shall be made to an Owner for any
registration of transfer or exchange of Certificates, but the Trustee may
require payment of a sum sufficient to cover any tax or other governmental
charge that may be imposed in connection with any registration of transfer or
exchange of Certificates; any other expenses in connection with such transfer or
exchange shall be an expense of the Trust.

                  (g) It is intended that the Class A Certificates be registered
so as to participate in a global book-entry system with the Depository, as set
forth herein. Each Class of Class A Certificates shall, except as otherwise
provided in the next paragraph, be initially issued in the form of a single
fully registered Class A Certificate with a denomination equal to the Aggregate
Certificate Principal Balance. Upon initial issuance, the ownership of each such
Class A Certificate shall be registered in the Register in the name of Cede &
Co., or any successor thereto, as nominee for the Depository.

                  The Sponsor and the Trustee are hereby authorized to execute
and deliver the Representation Letter with the Depository.

                  With respect to Class A Certificates registered in the
Register in the name of Cede & Co., as nominee of the Depository, the Sponsor,
the Master Servicer, the Certificate Insurer and the Trustee shall have no
responsibility or obligation to Direct or Indirect Participants or beneficial
owners for which the Depository holds Class A Certificates from time to time as
a Depository. Without limiting the immediately preceding sentence, the Sponsor,
the Master Servicer, the Certificate Insurer and the Trustee shall have no
responsibility or obligation with respect to (i) the accuracy of the records of
the Depository, Cede & Co., or any Direct or Indirect Participant with respect
to the ownership interest in the Class A Certificates, (ii) the delivery to any
Direct or Indirect Participant or any other Person, other than a registered
Owner of a Class A Certificate as shown in the Register, of any notice with
respect to the Class A Certificates or (iii)



                                       62
<PAGE>   64


the payment to any Direct or Indirect Participant or any other Person, other
than a registered Owner of a Class A Certificate as shown in the Register, of
any amount with respect to any distribution of principal or interest on the
Class A Certificates. No Person other than a registered Owner of a Class A
Certificate as shown in the Register shall receive a certificate evidencing such
Class A Certificate.

                  Upon delivery by the Depository to the Trustee of written
notice to the effect that the Depository has determined to substitute a new
nominee in place of Cede & Co., and subject to the provisions hereof with
respect to the payment of interest by the mailing of checks or drafts to the
registered Owners of Class A Certificates appearing as registered Owners in the
registration books maintained by the Trustee at the close of business on a
Record Date, the name "Cede & Co." in this Agreement shall refer to such new
nominee of the Depository.

                  (h) In the event that (i) the Depository or the Sponsor
advises the Trustee and the Certificate Insurer in writing that the Depository
is no longer willing or able to discharge properly its responsibilities as
nominee and depository with respect to the Class A Certificates and the Sponsor
or the Trustee is unable to locate a qualified successor or (ii) the Sponsor at
its sole option elects to terminate the book-entry system through the
Depository, the Class A Certificates shall no longer be restricted to being
registered in the Register in the name of Cede & Co. (or a successor nominee) as
nominee of the Depository. At that time, the Sponsor may determine that the
Class A Certificates shall be registered in the name of and deposited with a
successor depository operating a global book-entry system, as may be acceptable
to the Sponsor, or such depository's agent or designee but, if the Sponsor does
not select such alternative global book-entry system, then the Class A
Certificates may be registered in whatever name or names registered Owners of
Class A Certificates transferring Class A Certificates shall designate, in
accordance with the provisions hereof; provided, that the cost of any such
re-registration shall be paid by the Sponsor.

                  (i) Notwithstanding any other provision of this Agreement to
the contrary, so long as any Class A Certificate is registered in the name of
Cede & Co., as nominee of the Depository, all distributions of principal or
interest on such Class A Certificates as the case may be and all notices with
respect to such Class A Certificates as the case may be shall be made and given,
respectively, in the manner provided in the Representation Letter.

                  (j) Neither the Sponsor, the Master Servicer, the Certificate
Insurer, nor the Trustee will have any liability for any actions taken by DTC or
its nominee, Euroclear or CEDEL, including, without limitation, actions for any
aspect of the records relating to or payments made on account of beneficial
ownership interests in the Class A Certificates held by Euroclear, CEDEL or Cede
& Co., as nominee for DTC, or for maintaining supervising or reviewing any
records relating to such beneficial ownership interests.

                  SECTION 5.5. MUTILATED, DESTROYED, LOST OR STOLEN
CERTIFICATES. If (i) any mutilated Certificate is surrendered to the Trustee, or
the Trustee receives evidence to its satisfaction of the destruction, loss or
theft of any Certificate, and (ii) in the case of any mutilated Certificate,
such mutilated Certificate shall first be surrendered to the Trustee, and in the
case of any destroyed, lost or stolen Certificate, there shall be first
delivered to the Trustee such security or indemnity as may be reasonably
required by it to hold the Trustee harmless (provided, that with respect to an
Owner which is an insurance company, a letter of indemnity furnished by it shall
be sufficient for this purpose; provided, that such insurance company possesses
at least an investment grade rating from any of the Rating Agencies), then, in
the absence of notice to the Trustee that such Certificate has been acquired by
a bona fide purchaser, the Trustee shall



                                       63
<PAGE>   65


execute, authenticate and deliver, in exchange for or in lieu of any such
mutilated, destroyed, lost or stolen Certificate, a new Certificate of like
Class, tenor and aggregate principal amount, bearing a number not
contemporaneously outstanding.

                  Upon the issuance of any new Certificate under this Section,
the Trustee may require the payment of a sum sufficient to cover any tax or
other governmental charge that may be imposed in relation thereto; any other
expenses in connection with such issuance shall be an expense of the Trust.

                  Every new Certificate issued pursuant to this Section in
exchange for or in lieu of any mutilated, destroyed, lost or stolen Certificate
shall constitute evidence of a substitute interest in the Trust, and shall be
entitled to all the benefits of this Agreement equally and proportionately with
any and all other Certificates of the same Class duly issued hereunder and such
mutilated, destroyed, lost or stolen Certificate shall not be valid for any
purpose.

                  The provisions of this Section are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Certificates.

                  SECTION 5.6. PERSONS DEEMED OWNERS. The Trustee and any agent
of the Trustee may treat the Person in whose name any Certificate is registered
as the Owner of such Certificate for the purpose of receiving distributions with
respect to such Certificate and for all other purposes whatsoever, and neither
the Trustee nor any agent of the Trustee shall be affected by notice to the
contrary.

                  SECTION 5.7. CANCELLATION. All Certificates surrendered for
registration of transfer or exchange shall, if surrendered to any Person other
than the Trustee, be delivered to the Trustee and shall be promptly cancelled by
it. No Certificate shall be authenticated in lieu of or in exchange for any
Certificate cancelled as provided in this Section, except as expressly permitted
by this Agreement. All cancelled Certificates may be held by the Trustee in
accordance with its standard retention policy.

                  SECTION 5.8. LIMITATION ON TRANSFER OF OWNERSHIP RIGHTS.

                  (a) No sale or other transfer of any Class A Certificate shall
be made to the Sponsor, any Originator or any of their respective affiliates,
other than Advanta National Bank or Advanta Bank Corp.

                  (b) No sale or other transfer of record or beneficial
ownership of a Class R or Class RL Certificate (whether pursuant to a purchase,
a transfer resulting from a default under a secured lending agreement or
otherwise) shall be made to a Disqualified Organization or an agent of a
Disqualified Organization. The transfer, sale or other disposition of a Class R
or Class RL Certificate (whether pursuant to a purchase, a transfer resulting
from a default under a secured lending agreement or otherwise) to a Disqualified
Organization shall be deemed to be of no legal force or effect whatsoever and
such transferee shall not be deemed to be an Owner for any purpose hereunder,
including, but not limited to, the receipt of distributions on such Class R or
Class RL Certificate. Furthermore, in no event shall the Trustee accept
surrender for transfer, registration of transfer, or register the transfer, of
any Class R or Class RL Certificate nor authenticate and make available any new
Class or Class RL Certificate unless the Trustee has received an affidavit from
the proposed transferee in the form attached hereto as Exhibit H. Each



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<PAGE>   66


holder of a Class R or Class RL Certificate by his acceptance thereof, shall be
deemed for all purposes to have consented to the provisions of this Section
5.08(b).

                  (c) No sale or other transfer of record or beneficial
ownership of a Class B, Class BS, Class R or Class RL Certificate shall be made
unless such transfer is exempt from the registration requirements of the
Securities Act of 1933, as amended, and any applicable state securities laws or
is made in accordance with said Act and laws. In the event such a transfer is to
be made within two years from the Startup Day, (i) the Trustee or the Sponsor
shall require a written opinion of counsel acceptable to and in form and
substance satisfactory to the Sponsor that such transfer may be made pursuant to
an exemption, describing the applicable exemption and the basis therefor, from
said Act and laws or is being made pursuant to said Act and laws, which opinion
of counsel shall not be an expense of the Trustee or the Sponsor, and (ii) the
Trustee shall require the Transferee to execute an investment letter acceptable
to and in form and substance satisfactory to the Sponsor certifying to the
Trustee and the Sponsor the facts surrounding such transfer, which investment
letter shall not be an expense of the Trustee or the Sponsor. The Owner of a
Class B, Class BS, Class R or Class RL Certificate desiring to effect such
transfer shall, and does hereby agree to, indemnify the Trustee and the Sponsor
against any liability that may result if the transfer is not so exempt or is not
made in accordance with such federal and state laws. No Class B, Class BS, Class
R or Class RL Certificate shall be acquired by or transferred to (i) an employee
benefit plan (as defined in section 3(3) of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA")) subject to the provisions of Title I
of ERISA, (ii) a plan (as defined in Section 4975(e)(1) of the Code) subject to
Section 4975 of the Code, or (iii) an entity whose underlying assets are deemed
to be assets of a plan described in (i) or (ii) above by reason of such plan's
investment in the entity (each, a "Benefit Plan Entity"). Any transferee of a
Class B, Class BS, Class R or Class RL Certificate shall deliver to the Trustee
a certificate to the effect that it is not a Benefit Plan Entity.

                  SECTION 5.9. ASSIGNMENT OF RIGHTS. An Owner may pledge,
encumber, hypothecate or assign all or any part of its right to receive
distributions hereunder, but such pledge, encumbrance, hypothecation or
assignment shall not constitute a transfer of an ownership interest sufficient
to render the transferee an Owner of the Trust without compliance with the
provisions of Section 5.4 and Section 5.8 hereof.


                                   ARTICLE VI

                                    COVENANTS

                  SECTION 6.1. DISTRIBUTIONS. The Trustee will duly and
punctually pay distributions with respect to the Certificates in accordance with
the terms of the Certificates and this Agreement. Such distributions shall be
made (i) by check mailed on each Payment Date or (ii) if requested by any Owner,
to such Owner by wire transfer to an account within the United States designated
no later than five Business Days prior to the related Record Date, made on each
Payment Date, in each case to each Owner of record on the immediately preceding
Record Date; provided, however, that an Owner of a Class A Certificate shall
only be entitled to payment by wire transfer if such Owner owns Class A
Certificates in the aggregate denomination of at least $5,000,000.



                                       65
<PAGE>   67


                  SECTION 6.2. MONEY FOR DISTRIBUTIONS TO BE HELD IN TRUST;
WITHHOLDING.

                  (a) All payments of amounts due and payable with respect to
any Certificate that are to be made from amounts withdrawn from the Certificate
Account pursuant to Section 7.5 hereof or from Insured Payments shall be made by
and on behalf of the Trustee, and no amounts so withdrawn from the Certificate
Account for payments of the Certificates and no Insured Payment shall be paid
over to the Trustee except as provided in this Section.

                  (b) The Trustee on behalf of the Trust shall comply with all
requirements of the Code and applicable state and local law with respect to the
withholding from any distributions made by it to any Owner of any applicable
withholding taxes imposed thereon and with respect to any applicable reporting
requirements in connection therewith.

                  (c) Any money held by the Trustee in trust for the payment of
any amount due with respect to any Class A or Class B Certificate and remaining
unclaimed by the Owner of such Class A or Class B Certificate for the period
then specified in the escheat laws of the State of New York after such amount
has become due and payable shall be discharged from such trust and be paid
first, to the Certificate Insurer on account of any Reimbursement Amount, and
second to the Owners of the Class R Certificates; and the Owner of such Class A
or Class B Certificate shall thereafter, as an unsecured general creditor, look
only to the Owners of the Class R Certificates, or the Certificate Insurer for
payment thereof (but only to the extent of the amounts so paid to the
Certificate Insurer or the Owners of the Class R Certificates), and all
liability of the Trustee with respect to such trust money shall thereupon cease;
provided, however, that the Trustee, before being required to make any such
payment, shall at the expense of the Sponsor cause to be published once, in the
eastern edition of The Wall Street Journal, notice that such money remains
unclaimed and that, after a date specified therein, which shall be not fewer
than 30 days from the date of such publication, any unclaimed balance of such
money then remaining will be paid to the Certificate Insurer or the Owners of
the Class R Certificates as provided above. The Trustee shall, at the direction
of the Sponsor, also adopt and employ, at the expense of the Sponsor, any other
reasonable means of notification of such payment (including but not limited to
mailing notice of such payment to Owners whose right to or interest in monies
due and payable but not claimed is determinable from the Register at the last
address of record for each such Owner).

                  SECTION 6.3. PROTECTION OF TRUST ESTATE.

                  (a) The Trustee will hold the Trust Estate in trust for the
benefit of the Owners and the Certificate Insurer as their interests may appear,
and, upon request of the Certificate Insurer, or with the consent of the
Certificate Insurer, at the request and expense of the Sponsor, will from time
to time execute and deliver all such supplements and amendments hereto pursuant
to Section 11.14 hereof and all instruments of further assurance and other
instruments, and will take such other action upon such request as it deems
reasonably necessary or advisable, to:

                  (i) more effectively hold in trust all or any portion of the
         Trust Estate;

                  (ii) perfect, publish notice of, or protect the validity of
         any grant made or to be made by this Agreement;

                  (iii) enforce any of the Mortgage Loans; or


                                       66
<PAGE>   68


                  (iv) preserve and defend title to the Trust Estate and the
         rights of the Trustee, and the ownership interests of the Owners
         represented thereby, in such Trust Estate against the claims of all
         Persons and parties.

                  The Trustee shall send copies of any request received from the
Certificate Insurer or the Sponsor to take any action pursuant to this Section
6.3 to the other party.

                  (b) The Trustee shall have the power to enforce, and shall
enforce the obligations of the other parties to this Agreement and of the
Certificate Insurer by action, suit or proceeding at law or equity, and shall
also have the power to enjoin, by action or suit in equity, any acts or
occurrences which may be unlawful or in violation of the rights of the Owners;
provided, however, that nothing in this Section shall require any action by the
Trustee unless the Trustee shall first (i) have been furnished indemnity
satisfactory to it and (ii) when required by this Agreement, have been requested
to take such action by a majority of the Percentage Interests represented by the
affected Class or Classes of Class A Certificates then Outstanding or, if there
are no longer any affected Class A Certificates then outstanding, by such
majority of the Percentage Interests represented by the Class R Certificates.

                  (c) The Trustee shall execute any instrument required pursuant
to this Section so long as such instrument does not conflict with this Agreement
or with the Trustee's fiduciary duties.

                  SECTION 6.4. PERFORMANCE OF OBLIGATIONS.

                  (a) The Trustee will not take any action that would release
the Sponsor or the Certificate Insurer from any of their respective covenants or
obligations under any instrument or document relating to the Trust Estate or the
Certificates or which would result in the amendment, hypothecation,
subordination, termination or discharge of, or impair the validity or
effectiveness of, any such instrument or document, except as expressly provided
in this Agreement or such other instrument or document.

                  The Trustee may contract with other Persons to assist it in
performing its duties hereunder.

                  SECTION 6.5. NEGATIVE COVENANTS. The Trustee will not, to the
extent within the control of the Trustee, take any of the following actions:

                  (i) sell, transfer, exchange or otherwise dispose of any of
         the Trust Estate except as expressly permitted by this Agreement;

                  (ii) claim any credit on or make any deduction from the
         distributions payable in respect of, the Certificates (other than
         amounts properly withheld from such payments under the Code) or assert
         any claim against any present or former Owner by reason of the payment
         of any taxes levied or assessed upon any of the Trust Estate;

                  (iii) incur, assume or guaranty on behalf of the Trust any
         indebtedness of any Person except pursuant to this Agreement;

                  (iv) dissolve or liquidate the Trust Estate in whole or in
         part, except pursuant to Article IX hereof; or



                                       67
<PAGE>   69


                  (v) (A) impair the validity or effectiveness of this
         Agreement, or release any Person from any covenants or obligations with
         respect to the Trust or to the Certificates under this Agreement,
         except as may be expressly permitted hereby or (B) create or extend any
         lien, charge, adverse claim, security interest, mortgage or other
         encumbrance to or upon the Trust Estate or any part thereof or any
         interest therein or the proceeds thereof.

                  SECTION 6.6. NO OTHER POWERS. The Trustee will not, to the
extent within the control of the Trustee, permit the Trust to engage in any
business activity or transaction other than those activities permitted by
Section 2.3 hereof.

                  SECTION 6.7. LIMITATION OF SUITS. No Owner shall have any
right to institute any proceeding, judicial or otherwise, with respect to this
Agreement or the Certificate Insurance Policy or for the appointment of a
receiver or trustee, or for any other remedy hereunder, unless:

                           (A) such Owner has previously given written notice to
                  the Sponsor, the Certificate Insurer, and the Trustee of such
                  Owner's intention to institute such proceeding;

                           (B) the Owners of not less than 25% of the Percentage
                  Interests represented by the affected Class or Classes of
                  Certificates then Outstanding or, if there are no affected
                  Classes of Class A or Class B Certificates then Outstanding,
                  by such percentage of the Percentage Interests represented by
                  the Class R Certificates, shall have made written request to
                  the Trustee to institute such proceeding in respect of such
                  Event of Default;

                           (C) such Owner or Owners have offered to the Trustee
                  reasonable indemnity against the costs, expenses and
                  liabilities to be incurred in compliance with such request;

                           (D) the Trustee for 60 days after its receipt of such
                  notice, request and offer of indemnity has failed to institute
                  such proceeding;

                           (E) as long as any Class A Certificate or any
                  Reimbursement Amount is outstanding, the Certificate Insurer
                  consented in writing thereto; and

                           (F) no direction inconsistent with such written
                  request has been given to the Trustee during such 60-day
                  period by the Certificate Insurer or by the Owners of a
                  majority of the Percentage Interests represented by the Class
                  A Certificates or, if there are no Class A Certificates then
                  Outstanding, by such majority of the Percentage Interests
                  represented by the Class R Certificates;

it being understood and intended that no one or more Owners shall have any right
in any manner whatever by virtue of, or by availing themselves of, any provision
of this Agreement to affect, disturb or prejudice the rights of any other Owner
of the same Class or to obtain or to seek to obtain priority or preference over
any other Owner of the same Class or to enforce any right under this Agreement,
except in the manner herein provided and for the equal and ratable benefit of
all the Owners of the same Class.

In the event the Trustee shall receive conflicting or inconsistent requests and
indemnity from two or more groups of Owners, each representing less than a
majority of the applicable Class of



                                       68
<PAGE>   70


Certificates, the Trustee shall act at the direction of the Certificate Insurer,
notwithstanding any other provision of this Agreement.

                  SECTION 6.8. UNCONDITIONAL RIGHTS OF OWNERS TO RECEIVE
DISTRIBUTIONS. Notwithstanding any other provision in this Agreement, the Owner
of any Certificate shall have the right, which is absolute and unconditional, to
receive distributions to the extent provided herein and therein with respect to
such Certificate or to institute suit for the enforcement of any such
distribution, and such right shall not be impaired without the consent of such
Owner.

                  SECTION 6.9. RIGHTS AND REMEDIES CUMULATIVE. Except as
otherwise provided herein, no right or remedy herein conferred upon or reserved
to the Trustee, the Certificate Insurer or to the Owners is intended to be
exclusive of any other right or remedy, and every right and remedy shall, to the
extent permitted by law, be cumulative and in addition to every other right and
remedy given hereunder or now or hereafter existing at law or in equity or
otherwise. Except as otherwise provided herein, the assertion or employment of
any right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

                  SECTION 6.10. DELAY OR OMISSION NOT WAIVER. No delay of the
Trustee, the Certificate Insurer or any Owner of any Certificate to exercise any
right or remedy under this Agreement to any Event of Default shall impair any
such right or remedy or constitute a waiver of any such Event of Default or an
acquiescence therein. Every right and remedy given by this Article VI or by law
to the Trustee, the Certificate Insurer or to the Owners may be exercised from
time to time, and as often as may be deemed expedient, by the Trustee, the
Certificate Insurer or by the Owners, as the case may be.

                  SECTION 6.11. CONTROL BY OWNERS. The Certificate Insurer (so
long as a Certificate Insurer Default has not occurred and is continuing) or the
Owners of a majority of the Percentage Interests represented by the Class A
Certificates then Outstanding, with the consent of the Control Party (which may
not be unreasonably withheld) or, if there are no longer any Class A
Certificates then Outstanding, by such majority of the Percentage Interests
represented by the Class R Certificates then Outstanding, with the consent of
the Control Party (which may not be unreasonably withheld) may direct the time,
method and place of conducting any proceeding for any remedy available to the
Control Party with respect to the Certificates or exercising any trust or power
conferred on the Control Party with respect to the Certificates or the Trust
Estate, including, but not limited to, those powers set forth in Section 6.3 and
Section 8.20 hereof; provided that:

                           (A) such direction shall not be in conflict with any
                  rule of law or with this Agreement;

                           (B) the Control Party shall have been provided with
                  indemnity satisfactory to it; and

                           (C) the Trustee may take any other action deemed
                  proper by the Trustee, which is not inconsistent with such
                  direction; provided, however, that the Trustee need not take
                  any action which it determines might involve it in liability
                  or may be unjustly prejudicial to the Owners not so directing;
                  provided, further, that in the event that any directions
                  provided by the Trustee and the Certificate Insurer conflict
                  with each other, the Certificate Insurer's direction shall
                  prevail.


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<PAGE>   71


                  So long as an Certificate Insurer Default has not occurred and
is continuing, the Certificate Insurer shall act as the Control Party and be
subrogated thereto until all Reimbursement Amounts have been paid.


                                  ARTICLE VII

                      ACCOUNTS, DISBURSEMENTS AND RELEASES

                  SECTION 7.1. COLLECTION OF MONEY. Except as otherwise
expressly provided herein, the Trustee may demand payment or delivery of all
money and other property payable to or receivable by the Trustee pursuant to
this Agreement, including all payments due on the Mortgage Loans in accordance
with the respective terms and conditions of such Mortgage Loans and required to
be paid over to the Trustee by the Master Servicer or by any Sub-Servicer. The
Trustee shall hold all such money and property received by it, other than
pursuant to or as contemplated by Section 6.2(b) hereof, as part of the Trust
Estate and shall apply it as provided in this Agreement.

                  SECTION 7.2. ESTABLISHMENT OF ACCOUNTS. On or prior to the
Startup Day, the Sponsor shall cause to be established, and the Trustee shall
maintain, at the corporate trust office of the Trustee, a Certificate Account, a
Pre-Funding Account, and a Capitalized Interest Account, each of which is to be
held by the Trustee in the name of the Trust for the benefit of the Owners of
the Certificates relating to such Mortgage Loan Group and the Certificate
Insurer, as their interests may appear.

                  SECTION 7.3. THE CERTIFICATE INSURANCE POLICY. On each
Determination Date the Trustee shall determine with respect to the immediately
following Payment Date:

                  (a) The amounts to be on deposit in the Certificate Account on
such Payment Date with respect to each Mortgage Loan Group (disregarding the
amounts of any Insured Payments with respect to such Mortgage Loan Group and any
investment earnings withdrawn from the Certificate Account in accordance with
Section 7.5(b) hereof) and equal to the sum of (x) such amounts excluding the
amount of any Monthly Excess Cashflow Amount included in such amounts and
excluding an amount equal to the Premium Amount with respect to such Mortgage
Loan Group together with any Servicing Fees and Trustee's Fees with respect to
such Mortgage Loan Group for the related Payment Date plus (y) any amounts of
Monthly Excess Cashflow Amount to be applied on account of such Mortgage Loan
Group; the amounts described in the preceding clause (x) with respect to Group I
and the related Payment Date, are the "Group I Available Funds" and with respect
to Group II and the related Payment Date are the "Group II Available Funds"; the
sum of the amounts described in the preceding clauses (x) and (y) are the "Group
I Net Available Distribution Amount" with respect to the Mortgage Loans in Group
I and "Group II Net Available Distribution Amount" with respect to the Mortgage
Loans in Group II; provided, however, that the amounts which cannot be
distributed to the Owners of the Class A Certificates as a result of proceedings
under the United States Bankruptcy Code or similar insolvency laws will not be
considered in determining the amount of Available Funds;

                  (b) If a Group I Deficiency Amount and/or a Group II
Deficiency Amount exists with respect to any Payment Date, the Trustee shall
complete a Notice in the form of Exhibit A to the Certificate Insurance Policy
and submit such notice to the Certificate Insurer no later than 12:00 noon New
York City time on the Business Day preceding such Payment Date as a claim for an
Insured Amount in an amount equal to such Group I and/or Group II Deficiency



                                       70
<PAGE>   72


Amount. Upon receipt of Insured Payments from the Certificate Insurer under the
Certificate Insurance Policy, the Trustee shall deposit such Insured Payments in
the Certificate Account.

                  (c) The Trustee shall distribute all Insured Payments
received, or the proceeds thereof, in accordance with Section 7.5(b)(F) to the
Owners of the related Class of Class A Certificates.

                  (d) The Trustee shall (i) receive Insured Payments as
attorney-in-fact of each Owner of the Class A Certificates of the related Class
receiving any Insured Payment from the Certificate Insurer and (ii) disburse
such Insured Payment to the Owners of the related Class A Certificates as set
forth in Section 7.5(b)(F). The Certificate Insurer shall be entitled to receive
the related Reimbursement Amount pursuant to Section 7.5(b)(D)(4) hereof with
respect to each Insured Payment made by the Certificate Insurer. The Trustee
hereby agrees on behalf of each Owner of Class A Certificates and the Trust for
the benefit of the Certificate Insurer that it recognizes that to the extent the
Certificate Insurer makes Insured Payments, either directly or indirectly (as by
paying through the Trustee), to the Owners of such Class A Certificates, the
Certificate Insurer will be entitled to receive the related Reimbursement Amount
pursuant to Section 7.5(b)(D)(4) hereof.

                  (e) The Trustee shall receive, as attorney-in-fact of each
Owner of a Class A Certificate, any Insured Payment from the Certificate Insurer
and disburse the same to each Owner of a Class A Certificate in accordance with
the provisions of Section 7.5. Insured Payments disbursed by the Trustee from
proceeds of the Certificate Insurance Policy shall not be considered payment by
the Trust Estate nor shall such payments discharge the obligation of the Trust
Estate with respect to such Class A Certificates, and the Certificate Insurer
shall become the owner of such unpaid amounts due from the Trust Estate in
respect of the Class A Certificates. The Trustee hereby agrees on behalf of each
Owner of a Class A Certificate for the benefit of the Certificate Insurer that
it recognizes that to the extent the Certificate Insurer makes any Group I
Insured Payment or Group II Insured Payment, as applicable, either directly or
indirectly (as by paying through the Trustee), to the Class A
Certificateholders, the Certificate Insurer will be subrogated to the rights of
the Class A Certificateholders with respect to such Insured Payment, shall be
deemed to the extent of payments so made to be a registered Class A
Certificateholder and shall receive all future distributions until all such
Insured Payments by the Certificate Insurer, together with interest thereon at
the interest rate borne by the Class A Certificates, have been fully reimbursed.
To evidence such subrogation, the Trustee shall, or shall cause the Registrar
to, note the Certificate Insurer's rights as subrogee on the registration books
maintained by the Trustee or the Registrar upon receipt from the Certificate
Insurer of proof of payment of any Group I Insured Payment or Group II Insured
Payment, as applicable. The effect of the foregoing provisions is that, to the
extent of Insured Payments made by it, the Certificate Insurer shall be paid
before payment of the balance of the distributions are made to the other Owners
of the Class A Certificates.

                  SECTION 7.4. PRE-FUNDING ACCOUNT AND CAPITALIZED INTEREST
ACCOUNT.

                  (a) On the Startup Day, the Trustee will deposit, on behalf of
the Owners of the Group I Certificates, the Group I Original Pre-Funded Amount
in the Pre-Funding Account from the proceeds of the sale of the Certificates and
on the Startup Day, the Trustee shall deposit, on behalf of the Owners of the
Group I Certificates, the Group I Capitalized Interest Deposit in the
Capitalized Interest Account from the proceeds of the sale of the Group I
Certificates.


                                       71
<PAGE>   73


                  (b) On any Subsequent Transfer Date, the Sponsor shall
instruct the Trustee in writing to withdraw from the Pre-Funding Account an
amount equal to 100% of the aggregate Loan Balances of the Subsequent Mortgage
Loans sold to the Trust on such Subsequent Transfer Date and pay such amount to
or upon the order of the Sponsor upon satisfaction of the conditions set forth
in Section 3.8 hereof with respect to such transfer.

                  (c) If (x) the Group I Pre-Funded Amount with respect to the
related Mortgage Loan Group has not been reduced to zero by July 16, 1999, or
(y) the Group I Pre-Funded Amount has been reduced to $100,000 or less, or (z)
any Event of Default occurs and is continuing in each case after giving effect
to any reductions in the Group I Pre-Funded Amount on or before the related such
Remittance Date, the Sponsor shall instruct the Trustee to withdraw from the
Pre-Funding Account on such Remittance Date and deposit in the Certificate
Account (i) on behalf of the owners of the Group I Certificates, the difference,
if any, between (A) the Group I Original Pre-Funded Amount and (B) all amounts
theretofore withdrawn from the Pre-Funding Account with respect to Subsequent
Mortgage Loans purchased for Group I.

                  (d) On each Payment Date during the Pre-Funding Period, the
Trustee shall transfer the Pre-Funding Earnings, if any, relating to such
Payment Date from the Pre-Funding Account to the Certificate Account.

                  (e) On the Payment Dates occurring in June 1999 and July 1999,
the Trustee shall transfer from the Capitalized Interest Account to the
Certificate Account with respect to Group I, the Group I Capitalized Interest
Requirement, if any, for such Payment Dates.

                  (f) On the Payment Date immediately following the end of the
Pre-Funding Period, any amounts remaining in the Capitalized Interest Account
after taking into account the transfers on such Payment Date described in clause
(e) above shall be paid to the Owners of the Class R Certificates, and the
Capitalized Interest Account shall be closed.

                  (g) On the Payment Dates occurring in June 1999 and July 1999,
the Trustee shall transfer any investment earnings with respect to amounts on
deposit in the Capitalized Interest Account to the Master Servicer or its
designee.

                  SECTION 7.5. FLOW OF FUNDS.

                  (a) On each Remittance Date, the Trustee shall deposit to the
Certificate Account with respect to each Mortgage Loan Group, without
duplication, (i) upon receipt, any Insured Payments relating to such Mortgage
Loan Group, the proceeds of any liquidation of the assets of the Trust, insofar
as such assets relate to such Mortgage Loan Group, together with the Monthly
Remittance Amount with respect to such Mortgage Loan Group remitted by the
Master Servicer or any Sub-Servicer and (ii) on the Payment Dates occurring in
June and July 1999, as applicable, (x) the Pre-Funding Earnings transferred by
the Trustee pursuant to Section 7.4(d) hereof, (y) the Group I Capitalized
Interest Requirement to be transferred on such Payment Dates from the
Capitalized Interest Account, pursuant to Section 7.4(e) hereof with respect to
Group I and (z) the portion of the amount, if any, to be transferred on such
Payment Date from the Pre-Funding Account, pursuant to Section 7.4(c) hereof
with respect to Group I.

                  (b) On each Payment Date the Trustee shall withdraw from the
Certificate Account and remit to the Master Servicer or its designee all net
investment earnings then on deposit in the Certificate Account (exclusive of any
such earnings transferred from the Pre-Funding Account), and shall make the
following allocations, disbursements and transfers of the



                                       72
<PAGE>   74


remaining amount then on deposit in the Certificate Account with respect to each
Mortgage Loan Group in the following order of priority, and each such
allocation, transfer and disbursement shall be treated as having occurred only
after all preceding allocations, transfers and disbursements have occurred:

                           (A) first, from amounts then on deposit in the
                  Certificate Account with respect to such Mortgage Loan Group,
                  to the Trustee, an amount equal to the Trustee's Fees then due
                  to it with respect to such Mortgage Loan Group;

                           (B) second, from amounts then on deposit in the
                  Certificate Account with respect to such Mortgage Loan Group,
                  to the Certificate Insurer the related Premium Amount for such
                  Payment Date;

                           (C) third, from amounts then on deposit in the
                  Certificate Account to the Master Servicer, an amount equal to
                  any Servicing Fees then due to it, to the extent not
                  previously received by the Master Servicer pursuant to
                  Sections 8.8(c)(i) or 8.9(a) hereof;

                           (D) fourth, on each Payment Date, the Trustee shall
                  allocate the Monthly Excess Cashflow Amount with respect to
                  each Mortgage Loan Group in the following order of priority:

                           1. first, such Monthly Excess Cashflow Amount shall
                           be allocated on such Payment Date with respect to the
                           related Mortgage Loan Group in an amount equal to the
                           excess, if any, of (x) the related Required
                           Distributions for such Payment Date over (y) the
                           Available Funds with respect to such Mortgage Loan
                           Group for such Payment Date (the amount of such
                           difference being the "Available Funds Shortfall" with
                           respect to the related Mortgage Loan Group);

                           2. second, any portion of the Monthly Excess Cashflow
                           Amount with respect to such Mortgage Loan Group
                           remaining after the application described in clause
                           (1) above shall be allocated against any Available
                           Funds Shortfall with respect to the other Mortgage
                           Loan Group;

                           3. third, any portion of the Monthly Excess Cashflow
                           Amount with respect to such Mortgage Loan Group
                           remaining after the allocations described in clauses
                           (1) and (2) above shall be paid to the Certificate
                           Insurer in respect of amounts owed on account of any
                           Reimbursement Amount with respect to the related
                           Mortgage Loan Group;

                           4. fourth, any portion of the Monthly Excess Cashflow
                           Amount with respect to such Mortgage Loan Group
                           remaining after the allocations described in clauses
                           (1), (2) and (3) above shall be paid to the
                           Certificate Insurer in respect of any Reimbursement
                           Amount with respect to the other Mortgage Loan Group;


                                       73
<PAGE>   75


                           (E) fifth, the amount, if any, of the Monthly Excess
                  Cashflow Amount with respect to a Mortgage Loan Group on a
                  Payment Date remaining after the allocations described in
                  clause (D) above is the "Net Monthly Excess Cashflow" with
                  respect to such Mortgage Loan Group for such Payment Date;
                  such amount is required to be applied in the following order
                  of priority:

                           1. first, such Net Monthly Excess Cashflow shall be
                           used to reduce to zero, through the payment of an
                           Overcollateralization Increase Amount, any
                           Overcollateralization Deficiency Amount with respect
                           to the related Mortgage Loan Group as of such Payment
                           Date; such Overcollateralization Increase Amount for
                           a Mortgage Loan Group shall be distributed to those
                           Classes in such Mortgage Loan Group then entitled to
                           receive distributions of principal, as set forth in
                           Section 7.5(b)(F)(1)(c) or Section 7.5(b)(F)(2)(c),
                           as appropriate;

                           2. second, any portion of the Net Monthly Excess
                           Cashflow remaining after the application described in
                           clause (1) above shall be used to reduce to zero,
                           through the payment of an Overcollateralization
                           Increase Amount, any Overcollateralization Deficiency
                           Amount with respect to the other Mortgage Loan Group;
                           such Overcollateralization Increase Amount for a
                           Mortgage Loan Group shall be distributed to those
                           Classes in such Mortgage Loan Group then entitled to
                           receive distributions of principal, as set forth in
                           Section 7.5(b)(F)(1)(c) or Section 7.5(b)(F)(2)(c),
                           as appropriate;

                           3. third, any remaining Net Monthly Excess Cashflow
                           remaining after the applications described in clauses
                           (1) and (2) above shall be paid to the Master
                           Servicer to the extent of any unreimbursed
                           Delinquency Advances, unreimbursed Servicing Advances
                           and accrued and unpaid Servicing Fees, in each case
                           as certified to the Trustee by the Master Servicer to
                           be owing to it as of such Payment Date;

                           (F) sixth, following the making by the Trustee of all
                  allocations, transfers and disbursements described under
                  Sections 7.3 and 7.10 hereof and the prior clauses of this
                  Section 7.5, from amounts (including any related Insured
                  Payment) then on deposit in the Certificate Account with
                  respect to each related Mortgage Loan Group, (such amount with
                  respect to each Mortgage Loan Group, the related "Group
                  Distribution Amount") shall be applied as follows:

                           1. with respect to Group I, the Group Distribution
                           Amount shall be applied:


                               (a) first, pro rata, to the Owners of the Group I
                               Certificates, their respective Class A Current
                               Interest;


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<PAGE>   76


                               (b) second, pro rata, to the Owners of the Group
                               I Certificates, their respective Class A Interest
                               Carry Forward Amount;

                               (c) third, the lesser of (x) the remaining amount
                               of the Group Distribution Amount with respect to
                               the Group I Pool and (y) the Group I Class A
                               Principal Distribution Amount shall be applied in
                               the following order of priority:

                                   i.   first, the Group I Class A Principal
                                        Distribution Amount shall be distributed
                                        to the Owners of the Class A-6
                                        Certificates in an amount equal to the
                                        Class A-6 Principal Distribution Amount;

                                   ii.  second, the excess of (x) the Group I
                                        Class A Principal Distribution Amount
                                        over (y) the amount distributed in
                                        clause (c)(i) above shall be distributed
                                        to the Owners of the Class A-1
                                        Certificates, the Class A-2
                                        Certificates, the Class A-3
                                        Certificates, the Class A-4 Certificates
                                        and the Class A-5 Certificates,
                                        sequentially in that order, until the
                                        Certificate Principal Balance of each
                                        Class (in ascending order of numerical
                                        designation) has been reduced to zero;

                                   iii. third, to the Owners of the Class A-6
                                        Certificates, any remaining amount of
                                        the Group I Class A Principal
                                        Distribution Amount for such Payment
                                        Date until the Certificate Principal
                                        Balance of the Class A-6 Certificates
                                        has been reduced to zero.

                           Notwithstanding the foregoing, on any Payment Date on
                           which the Overcollateralization Amount related to
                           Group I is zero and the Certificate Insurer is in
                           default, the Principal Distribution Amount with
                           respect to the Group I Certificates shall be
                           distributed pro rata to the Owners of the Group I
                           Certificates and not in accordance with the above
                           priorities.

                           2. With respect to Group II, the Group Distribution
                           Amount shall be applied:


                               (a) first, pro rata, to the Owners of the Group
                               II Certificates, their respective Class A Current
                               Interest;


                               (b) second, pro, rata, to the Owners of the Group
                               II Certificates, their respective Class A
                               Interest Carry Forward Amount;


                               (c) third, the lesser of (x) the remaining amount
                               of the Group Distribution Amount with respect to
                               the Group II Pool and (y) the Group II Class A
                               Principal Distribution Amount shall be
                               distributed to the Owners of the Class A-7



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<PAGE>   77


                               Certificates until the Certificate Principal
                               Balance of Class A-7 has been reduced to zero;

                           (G) seventh, on each Payment Date, the Trustee shall
                  transfer from amounts then on deposit in the Certificate
                  Account to the Supplemental Interest Payment Account, the
                  Class B Distribution Amount; such transfer shall be deemed to
                  be a distribution on the Class B Certificates;

                           (H) eighth, on each Payment Date, the Trustee shall
                  transfer all remaining monies then on deposit in the
                  Certificate Account to the Owners of the Class R Certificates.

                  (b) Notwithstanding paragraph (b) above, on any Payment Date
during the continuance of any Certificate Insurer Default, no Premium Amounts or
Reimbursement Amounts shall be paid to the Certificate Insurer unless the
Certificate Insurer or its custodian, trustee, agent, receiver or similar
official continues to make payment under the Policy, and any amounts otherwise
payable to the Certificate Insurer as Premium Amounts or Reimbursement Amounts
shall be retained in the Certificate Account as the Total Available Funds with
respect to the related Mortgage Loan Group, as appropriate. On any Payment Date
wherein such Certificate Insurer Default has been cured, the Premium Amounts or
Reimbursement Amount shall be paid to the Certificate Insurer.

                  (c) Notwithstanding any of the foregoing provisions, the
aggregate amount distributed to the Owners of any Class A Certificates on
account of principal shall not exceed the Certificate Principal Balance for the
related Class.

                  SECTION 7.6. INVESTMENT OF ACCOUNTS.

                  (a) So long as no event described in Sections 8.20(a) or (b)
hereof shall have occurred and be continuing, and consistent with any
requirements of the Code, all or a portion of the Accounts (other than the
Principal and Interest Account) held by the Trustee shall be invested and
reinvested by the Trustee in the name of the Trustee for the benefit of the
Owners and the Certificate Insurer, as their interests may appear, as directed
in writing by the Master Servicer, in one or more Eligible Investments bearing
interest or sold at a discount, other than the Capitalized Interest Account
which funds shall be invested and reinvested by the Trustee on behalf of the
Master Servicer. The Master Servicer may invest funds held in the Principal and
Interest Account in one or more Eligible Investments. During the continuance of
an event described in Sections 8.20(a) or (b) hereof and following any removal
of the Master Servicer, the Control Party shall direct such investments. No
investment in any Account shall mature later than the Business Day immediately
preceding the next Payment Date.

                  (b) If any amounts are needed for disbursement from any
Account held by the Trustee or the Master Servicer, as the case may be, and
sufficient uninvested funds are not available to make such disbursement, the
Trustee or the Master Servicer, as the case may be, shall cause to be sold or
otherwise converted to cash a sufficient amount of the investments in such
Account. No investments will be liquidated prior to maturity unless the proceeds
thereof are needed for disbursement.

                  (c) Subject to Section 10.1 hereof, the Trustee shall not in
any way be held liable by reason of any insufficiency in any Account held by the
Trustee resulting from any loss on any Eligible Investment included therein
(except and only to the extent that the bank serving as Trustee is the obligor
thereon and is otherwise liable).


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<PAGE>   78


                  (d) In the absence of any investment direction from the Master
Servicer with respect to amounts on deposit in the Accounts, the Trustee shall
invest such amounts in the Eligible Investment set forth in Section 7.7(i)
hereof.

                  (e) For purposes of investment, the Trustee shall aggregate
all amounts on deposit in the Accounts. All income or other gain from
investments in the Accounts shall be deposited, pro rata, in the Accounts
immediately on receipt, and any loss resulting from such investments shall be
charged, pro rata, to the Accounts.

                  SECTION 7.7. ELIGIBLE INVESTMENTS. The following are Eligible
Investments:

                  (a) Direct general obligations of the United States or the
obligations of any agency or instrumentality of the United States fully and
unconditionally guaranteed, the timely payment or the guarantee of which
constitutes a full faith and credit obligation of the United States.

                  (b) Federal Housing Administration debentures and rated Aa2 or
higher by Moody's and AA or better by Standard & Poor's.

                  (c) Freddie Mac senior debt obligations and rated Aa2 or
higher by Moody's and AA or better by Standard & Poor's.

                  (d) Federal Home Loan Banks' consolidated senior debt
obligations and rated Aa2 or higher by Moody's and AA or better by Standard &
Poor's.

                  (e) Fannie Mae senior debt obligations and rated Aa2 or higher
by Moody's.

                  (f) Federal funds, certificates of deposit, time and demand
deposits, and bankers' acceptances (having original maturities of not more than
365 days) of any domestic bank, the short-term debt obligations of which have
been rated A-1 or better by Standard & Poor's and P-1 by Moody's.

                  (g) Investment agreements approved by the Control Party
provided:

                           1. The agreement is with a bank or insurance company
                  which has an unsecured, uninsured and unguaranteed obligation
                  (or claims-paying ability) rated Aa2 or better by Moody's and
                  AA or better by Standard & Poor's, and

                           2. Monies invested thereunder may be withdrawn
                  without any penalty, premium or charge upon not more than one
                  day's notice (provided such notice may be amended or canceled
                  at any time prior to the withdrawal date), and

                           3. The agreement is not subordinated to any other
                  obligations of such insurance company or bank, and

                           4. The same guaranteed interest rate will be paid on
                  any future deposits made pursuant to such agreement, and

                           5. The Trustee and the Certificate Insurer receive an
                  opinion of counsel that such agreement is an enforceable
                  obligation of such insurance company or bank.


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<PAGE>   79


                  (h) Commercial paper (having original maturities of not more
than 365 days) rated A-1 or better by Standard & Poor's and P-1 or better by
Moody's.

                  (i) Investments in money market funds rated AAAm or AAAM-G by
Standard & Poor's and Aaa or P-1 by Moody's.

                  (j) Investments approved in writing by the Control Party and
acceptable to the Rating Agencies and the Certificate Insurer;

provided that no instrument described above is permitted to evidence either the
right to receive (a) only interest with respect to obligations underlying such
instrument or (b) both principal and interest payments derived from obligations
underlying such instrument and the interest and principal payments with respect
to such instrument provided a yield to maturity at par greater than 120% of the
yield to maturity at par of the underlying obligations; and provided, further,
that no instrument described above may be purchased at a price greater than par
if such instrument may be prepaid or called at a price less than its purchase
price prior to stated maturity; and provided, further, that, with respect to any
instrument described above, such instrument qualifies as a "permitted
investment" within the meaning of Section 860G(a)(5) of the Code and the
regulations thereunder.

                  SECTION 7.8. REPORTS BY TRUSTEE.

                  (a) On each Payment Date the Trustee shall provide to each
Owner, to the Master Servicer, to the Certificate Insurer, to each Underwriter,
to the Sponsor and to each Rating Agency a written report in substantially the
form set forth as Exhibit H hereto with respect to each Mortgage Loan Group, as
such form may be revised by the Trustee and the Master Servicer from time to
time, but in every case setting forth the information requested on Exhibit H
hereto and the following information:

                  (i) the amount of the distribution with respect to the related
         Class of Certificates;

                  (ii) the amount of such distributions allocable to principal,
         separately identifying the aggregate amount of any Prepayments or other
         unscheduled recoveries of principal included therein;

                  (iii) the amount of such distributions allocable to interest;

                  (iv) the Interest Carry Forward Amount for each Class;

                  (v) the Certificate Principal Balance for each Class of Class
         A Certificates as of such Payment Date, together with the principal
         amount of such Class of Class A Certificates (based on a Certificate in
         an original principal amount of $1,000) then outstanding, in each case
         after giving effect to any payment of principal on such Payment Date;

                  (vi) with respect to the Class A Certificates, the amount of
         any Class A Insured Payment included in the amounts distributed in
         respect of the Class A Certificates;


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<PAGE>   80


                  (vii) the aggregate Loan Balance of all Mortgage Loans after
         giving effect to any payment of principal on such Payment Date both in
         the aggregate and in each of the Mortgage Loan Groups;

                  (viii) information furnished by the Sponsor pursuant to
         Section 6049(d)(7)(C) of the Code and the regulations promulgated
         thereunder to assist the Owners in computing their market discount;

                  (ix) the total of any Substitution Amounts and any Loan
         Purchase Price amounts included in such distribution;

                  (x) the weighted average Coupon Rate of the Mortgage Loans
         with respect to each Group;

                  (xi) the amount of any Supplemental Interest Amount;

                  (xii) the Overcollateralization Amount, for each Mortgage Loan
         Group, after giving effect to any payment of principal on such Payment
         Date;

                  (xiii) the aggregate Loan Balances of all Mortgage Loans in
         each Mortgage Loan Group that were repurchased during the related
         Remittance Period and any repurchases pursuant to Section 8.10;

                  (xiv) the amounts, if any, of any Realized Losses in each
         Mortgage Loan Group for the related Remittance Period;

                  (xv) the Pool Cumulative Realized Losses (x) as a percentage
         of the average Pool Principal Balance as of the close of business on
         the last day of each of the twelve preceding Remittance Periods and (y)
         as a percentage of the sum of the aggregate Loan Balances of the
         Mortgage Loans as of the Initial Cut-Off Date;

                  (xvi) a number with respect to each Class (the "Pool Factor"
         for such Class) computed by dividing the Certificate Principal Balance
         for such Class (after giving effect to any distribution of principal to
         be made on such Payment Date) by the Certificate Principal Balance for
         such Class on the Startup Day;

                  (xvii) whether a Servicer Termination Loss Trigger has
         occurred, as such terms are defined in the Insurance Agreement.

                  Items (i) through (iii) above shall, with respect to each
Class of Class A Certificates, be presented on the basis of a Certificate having
a $1,000 denomination. In addition, by January 31 of each calendar year
following any year during which the Certificates are outstanding, the Trustee
shall furnish a report to each Owner of record at any time during each calendar
year as to the aggregate of amounts reported pursuant to (i), (ii) and (iii)
with respect to the Certificates for such calendar year. If a Class of
Certificates is in book-entry form, DTC will supply such reports to the Owners
of such Class of Certificates as are in accordance with its procedures.

                  (b) In addition, on each Payment Date the Trustee will
distribute to each Owner, to the Certificate Insurer, to each Underwriter, to
the Master Servicer, to the Sponsor and to each Rating Agency, together with the
information described in Subsection (a) preceding, the



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<PAGE>   81


following information with respect to each Mortgage Loan Group as of the close
of business on the last Business Day of the prior calendar month, which is
hereby required to be prepared by the Master Servicer and furnished to the
Trustee for such purpose on or prior to the related Remittance Date:

                  (i) the total number and aggregate Loan Balances of Mortgage
         Loans in each Mortgage Loan Group and the percentage (based on the
         aggregate Loan Balances) of the aggregate Loan Balances of such
         Mortgage Loans in the related Mortgage Loan Group which are (a) 30-59
         days Delinquent, (b) 60-89 days Delinquent and (c) 90 or more days
         Delinquent;

                  (ii) the number, aggregate Loan Balances and percentage (based
         on the aggregate Loan Balances of the Mortgage Loans in such Mortgage
         Loan Group) of all Mortgage Loans in the related Mortgage Loan Group in
         foreclosure proceedings (and whether any such Mortgage Loans are also
         included in any of the statistics described in the foregoing clause
         (i));

                  (iii) the number, aggregate Loan Balances and percentage
         (based on the aggregate Loan Balances of the Mortgage Loans in such
         Mortgage Loan Group) of all Mortgage Loans in the related Mortgage Loan
         Group relating to Mortgagors in bankruptcy proceedings (and whether any
         such Mortgage Loans are also included in any of the statistics
         described in the foregoing clause (i));

                  (iv) the number, aggregate Loan Balances and percentage (based
         on the aggregate Loan Balances of the Mortgage Loans in such Mortgage
         Loan Group) of all Mortgage Loans in the related Mortgage Loan Group
         relating to REO Properties (and whether any such Mortgage Loans are
         also included in any of the statistics described in the foregoing
         clause (i));

                  (v) the loan number of the Mortgage Loans and the book value
         of any REO Property in each Mortgage Loan Group;

                  (vi) the aggregate Loan Balance of 60+ Day Delinquent Mortgage
         Loans with respect to each Group; and

                  (vii) the book value of any REO Property.

                  (c) The foregoing reports shall be sent be to an Owner only
insofar as such Owner owns a Certificate with respect to the related Mortgage
Loan Group.

                  (d) The Sponsor and the Master Servicer, on behalf of
Certificateholders and the Trust (the "Trust Parties") hereby authorize the
Trustee to include the loan level information with respect to the Mortgage
Loans, excluding any information relating to the fees or amounts due to the
Certificate Insurer, contained in reports provided to the Certificate Insurer or
the Trustee by the Master Servicer hereunder and, if so directed by an
Authorized Officer of the Sponsor in writing to the Trustee, the monthly report
to the Owners prepared by the Trustee (the "Information") on The Bloomberg, an
on-line computer based on-line information network maintained by Bloomberg L.P.
("Bloomberg") or on any other on-line computer based on-line information network
or service ("Information Network"), or in other electronic or print information
services deemed acceptable by the Sponsor or the Master Servicer as designated
in writing to the Trustee by an Authorized Officer of the Master Servicer. The
Trust Parties agree



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not to commence any actions or proceedings, or otherwise assert any claims,
against the Trustee or its affiliates or any of the Trustee's or its affiliates'
respective agents, representatives, directors, officers or employees
(collectively, the "Designated Parties"), arising out of, or related to or in
connection with the dissemination and/or use of any Information by the Trustee,
including, but not limited to, claims based on allegations of inaccurate or
incomplete information by the Trustee to Bloomberg or to any Information Network
or otherwise (other than in connection with the Trustee's negligence or willful
misconduct). The Trust Parties waive their rights to assert any such claims
against the Designated Parties and fully and finally release the Designated
Parties from any and all such claims, demands, obligations, actions and
liabilities (other than in connection with such Designated Parties' negligence
or willful misconduct). The Trustee makes no representations or warranties,
expressed or implied, of any kind whatsoever with respect to the accuracy,
adequacy, timeliness, completeness, merchantability or fitness for any
particular purpose of any Information in any form or manner. The authorizations,
covenants and obligations of the Trust Parties under this section shall be
irrevocable and shall survive the termination of this Agreement.

                  SECTION 7.9. ADDITIONAL REPORTS BY TRUSTEE.

                  (a) The Trustee shall report to the Sponsor, the Certificate
Insurer and the Master Servicer with respect to the amount then held in each
Account (including investment earnings accrued or scheduled to accrue) held by
the Trustee and the identity of the investments included therein, as the
Sponsor, the Master Servicer or the Certificate Insurer may from time to time
request. Without limiting the generality of the foregoing, the Trustee shall, at
the request of the Sponsor, the Master Servicer or the Certificate Insurer,
transmit promptly to the Sponsor, the Certificate Insurer and the Master
Servicer copies of all accounting of receipts in respect of the Mortgage Loans
furnished to it by the Master Servicer and shall notify the Sponsor, the
Certificate Insurer and the Master Servicer if any such receipts have not been
received by the Trustee.

                  (b) The Trustee shall immediately report to the Certificate
Insurer, Sponsor and Master Servicer with respect to its actual knowledge,
without independent investigation, of any breach of any of the representations
or warranties relating to individual Mortgage Loans set forth in any Master
Transfer Agreement or in Section 3.3(a) hereof.

                  SECTION 7.10. SUPPLEMENTAL INTEREST PAYMENT ACCOUNT AND
SUPPLEMENTAL INTEREST PAYMENTS.

                  (a) The parties hereto do hereby create and establish a trust,
the "Advanta Supplemental Interest Trust 1999-2" (the "Supplemental Interest
Trust"). The Supplemental Interest Trust shall hold a trust account at the
corporate trust office of the Trustee; the "Supplemental Interest Payment
Account" to be held by the Trustee in its name on behalf of the Supplemental
Interest Trust. None of the assets of the Supplemental Interest Trust shall be
considered assets of the REMIC Trust, and any amounts transferred from the REMIC
Trust to the Supplemental Interest Trust shall be treated as distributions with
respect to the Class B Certificates.

                  (b) The amount, if any, on deposit in the Supplemental
Interest Payment Account on any Payment Date is the "Supplemental Interest
Payment Amount Available" on such Payment Date.


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<PAGE>   83


                  On each Payment Date, the Trustee shall withdraw from the
Supplemental Interest Payment Account and pay to the Owners of each Supplemental
Interest Right (which Owners shall, in the absence of contrary instructions
received by the Trustee from the Owners of the Class A-1 and A-7 Certificates,
as applicable, be the Owners of the Class A-1 and A-7 Certificates, as
applicable), pro rata based on the Supplemental Interest Amount due to each such
Class, the lesser of (x) the sum of (i) the Supplemental Interest Amount for
such Payment Date plus (ii) any Supplemental Interest Shortfall Carry-Forward
Amount and (y) the Supplemental Interest Payment Amount Available.

                  If, on any Payment Date, the Supplemental Interest Payment
Amount Available is insufficient to pay the Supplemental Interest Amount for
such Payment Date (such deficiency, the "Supplemental Interest Shortfall
Amount"), the Trustee shall demand that the Designated Residual Owner fund such
deficiency on the related Payment Date and the Designated Residual Owner shall
be required to fund such deficiency.

                  (c) Any portion of the Supplemental Interest Payment Amount
Available remaining after application of clause (b) above shall be distributed
to the owners of the Class BS Certificates pro rata in accordance with their
Percentage Interests.

                  (d) The Trustee, on behalf of the Supplemental Interest Trust,
shall comply with all requirements of the Code and applicable state and local
law with respect to the withholding from any distributions made by it to any
Person entitled thereto of any applicable withholding taxes imposed thereon and
with respect to any applicable reporting requirements in connection therewith.

                  (e) Notwithstanding any other provision of this Section 7.10,
the right to receive the Supplemental Interest Amount plus any Supplemental
Interest Shortfall Carry-Forward Amounts (such right, the "Supplemental Interest
Right") shall be separately transferable from the Class A-1 and A-7
Certificates, subject to the restrictions on transfer set forth in Article V
hereof.


                                  ARTICLE VIII

                          SERVICING AND ADMINISTRATION
                                OF MORTGAGE LOANS

                  SECTION 8.1. MASTER SERVICER AND SUB-SERVICERS.

                  (a) Acting directly or through one or more Sub-Servicers as
provided in Section 8.3, the Master Servicer, as master servicer, shall service
and administer the Mortgage Loans in accordance with this Agreement on behalf of
the Trustee, the Owners and the Certificate Insurer in accordance with Accepted
Servicing Practices, and shall have full power and authority, acting alone, to
do or cause to be done any and all things in connection with such servicing and
administration which it may deem necessary or desirable.

                  (b) With respect to the Mortgage Loans, the duties of the
Master Servicer shall include (i) collecting and posting of all payments, (ii)
responding to inquiries of Mortgagors or by federal, state or local government
authorities, (iii) investigating delinquencies, (iv) reporting tax information
to Mortgagors in accordance with its customary practices, (v) accounting for
collections, (vi) furnishing monthly and annual statements to the Trustee and
the Certificate



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<PAGE>   84


Insurer, as applicable, with respect to distributions, (vii) paying Compensating
Interest and (viii) making Delinquency Advances and Servicing Advances pursuant
hereto. The Master Servicer shall follow its customary standards, policies and
procedures in performing its duties as Master Servicer. The Master Servicer
shall cooperate with the Trustee and furnish to the Trustee with reasonable
promptness information in its possession as may be necessary or appropriate to
enable the Trustee to perform its tax reporting duties hereunder

                  (c) Subject to clause (e) below, without limiting the
generality of the foregoing, the Master Servicer (i) shall continue, and is
hereby authorized and empowered by the Trustee, to execute and deliver, on
behalf of itself, the Owners, the Certificate Insurer and the Trustee or any of
them, any and all instruments of satisfaction or cancellation, or of full
release or discharge and all other comparable instruments, with respect to the
Mortgage Loans and with respect to the related Properties; (ii) may consent to
any modification of the terms of any Note not expressly prohibited hereby if the
effect of any such modification (x) will not be to affect materially and
adversely the security afforded by the related Property, the timing of receipt
of any payments required hereby or the interests of the Certificate Insurer and
(y) will not cause the Upper-Tier REMIC or the Lower-Tier REMIC to fail to
qualify as a REMIC.

                  (d) The Master Servicer shall, in accordance with Accepted
Servicing Practices, have the right to approve applications of Mortgagors for
consent to (i) partial releases of Mortgages, (ii) alterations to Properties and
(iii) removal, demolition or division of Properties. No application for consent
may be approved by the Master Servicer unless: (x) the provisions of the related
Note and Mortgage have been complied with; (y) the Combined Loan-to-Value Ratio
(which may, for this purpose, be determined at the time of any such action in a
manner reasonably acceptable to the Trustee) and the Mortgagor's debt-to-income
ratio after any release does not exceed the Combined Loan-to-Value Ratio and
debt-to-income ratio applicable to such Mortgage Loan at origination and (z) the
lien priority of the related Mortgage is not adversely affected or reduced;
provided, however, that the foregoing requirements (x), (y) and (z) shall not
apply to any such situation described in this paragraph if such situation
results from any condemnation or easement activity by a governmental entity.

                  (e) The parties intend that each of the Lower-Tier REMIC and
the Upper-Tier REMIC shall constitute a REMIC and that the affairs of each shall
be conducted so as to qualify each as a REMIC. In furtherance of such intention,
the Master Servicer covenants and agrees that it shall act as agent (and the
Master Servicer is hereby appointed to act as agent) on behalf of each such
REMIC and that in such capacity it shall: (i) use its best efforts to conduct
the affairs of each such REMIC at all times that any Class of Certificates are
outstanding so as to maintain the status of each such REMIC as a REMIC under the
REMIC Provisions; (ii) not knowingly or intentionally take any action or omit to
take any action that would cause the termination of the REMIC status of either
such REMIC or that would subject the Trust to tax and (iii) exercise reasonable
care not to allow either such REMIC to receive income from the performance of
services or from assets not permitted under the REMIC Provisions to be held by
each REMIC.

                  (f) Without limiting the generality of the foregoing, but
subject to Sections 8.13 and 8.14, the Master Servicer in its own name or in the
name of a Sub-Servicer may be authorized and empowered pursuant to a power of
attorney executed and delivered by the Trustee to execute and deliver, and may
be authorized and empowered by the Trustee, to execute and deliver, on behalf of
itself, the Owners, the Certificate Insurer and the Trustee or any of them, (i)
any and all instruments of satisfaction or cancellation or of partial or full
release or discharge and all other comparable instruments with respect to the
Mortgage Loans and with respect to the



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<PAGE>   85


Properties, (ii) and to institute foreclosure proceedings or obtain a deed in
lieu of foreclosure so as to effect ownership of any Property on behalf of the
Trustee, and (iii) to hold title to any Property upon such foreclosure or deed
in lieu of foreclosure on behalf of the Trustee; provided, however, that Section
8.14(a) shall constitute a power of attorney from the Trustee to the Master
Servicer or any Sub-Servicer to execute an instrument of satisfaction (or
assignment of mortgage without recourse) with respect to any Mortgage Loan paid
in full (or with respect to which payment in full has been escrowed). Subject to
Sections 8.13 and 8.14, the Trustee shall furnish the Master Servicer and any
Sub-Servicer with any powers of attorney and other documents as the Master
Servicer or such Sub-Servicer shall reasonably request to enable the Master
Servicer and such Sub-Servicer to carry out their respective servicing and
administrative duties hereunder.

                  (g) The Master Servicer shall give prompt notice to the
Trustee of any action, of which the Master Servicer has actual knowledge, to (i)
assert a claim against the Trust or (ii) assert jurisdiction over the Trust.

                  (h) Servicing Advances incurred by the Master Servicer or any
Sub-Servicer in connection with the servicing of the Mortgage Loans (including
any penalties in connection with the payment of any taxes and assessments or
other charges) on any Property shall be recoverable by the Master Servicer or
such Sub-Servicer to the extent described in Section 8.9(c) and in Section
7.5(b)(E)(3).

                  (i) The Master Servicer shall modify payments of monthly
principal and interest on any Mortgage Loan becoming subject to the terms of the
Civil Relief Act in accordance with the Master Servicer's general policies of
the comparable mortgage loans subject to the Civil Relief Act.

                  SECTION 8.2. COLLECTION OF CERTAIN MORTGAGE LOAN PAYMENTS.

                  (a) The Master Servicer shall, to the extent such procedures
shall be consistent with this Agreement and the terms and provisions of any
applicable Mortgage Insurance Policies, follow Accepted Servicing Practices. The
Master Servicer may in its discretion waive any assumption fees, late payment
charges, charges for checks returned for insufficient funds, prepayment fees, if
any, or other fees which may be collected in the ordinary course of servicing
the Mortgage Loans,

                  In addition, the Master Servicer may, if a Mortgagor is in
default or about to be in default because of a Mortgagor's financial condition,
arrange with the Mortgagor a schedule for the payment of delinquent payments due
on the related Mortgage Loan; provided, however, the Master Servicer shall not
reschedule the payment of delinquent payments more than one time in any twelve
consecutive months with respect to any Mortgagor and provided further that such
modifications shall not be made in excess of 5% of the aggregate of the Group I
Original Balance and the Group II Original Balance without the prior written
consent of the Certificate Insurer; provided, further, however, that, if the
Certificate Insurer has not given its consent within five (5) Business Days
after notice from the Master Servicer, the Certificate Insurer shall be deemed
to have given its consent to such modification or rescheduling for payments of
delinquent payments; provided, however, that such notice and consent shall not
be required in the event that the Master Servicer determines, in its good faith
business judgment that such modification is legally required to be made prior to
such five day period, in which case the Master Servicer shall give the
Certificate Insurer immediate notice of such action.


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<PAGE>   86


                  (b) The Master Servicer shall hold in escrow on behalf of the
related Mortgagor all Prepaid Installments received by it, and shall apply such
Prepaid Installments as directed by such Mortgagor and as set forth in the
related Note.

                  SECTION 8.3. SUB-SERVICING AGREEMENTS BETWEEN MASTER SERVICER
AND SUB-SERVICERS. The Master Servicer may and is hereby authorized to perform
any of its servicing responsibilities with respect to all or certain of the
Mortgage Loans through a Sub-Servicer, which may be an Affiliate. Pursuant to
the foregoing, the Master Servicer may enter into Sub-Servicing Agreements for
any servicing and administration of Mortgage Loans with any institution which is
in compliance with the laws of each state necessary to enable it to perform its
obligations under such Sub-Servicing Agreement. The Master Servicer shall give
notice to the Certificate Insurer and the Trustee of the appointment of any
Sub-Servicer which is not a Master Servicer Affiliate. The Master Servicer shall
also furnish to the Certificate Insurer and the Trustee a copy of the
Sub-Servicing Agreement, except when the Sub-Servicer is a Master Servicer
Affiliate. For purposes of this Agreement, the Master Servicer shall be deemed
to have received payments on Mortgage Loans when any Sub-Servicer has received
such payments. Any such Sub-Servicing Agreement shall be consistent with and not
violate the provisions of this Agreement.

                  By delivery of the Certificate Insurance Policy, the
Certificate Insurer is deemed to have approved Advanta National Bank and Advanta
Finance Corp. as Sub-Servicers hereunder.

                  SECTION 8.4. SUCCESSOR SUB-SERVICERS. The Master Servicer may
terminate any Sub-Servicing Agreement in accordance with the terms and
conditions of such Sub-Servicing Agreement and either directly service the
related Mortgage Loans itself or enter into a Sub-Servicing Agreement with a
successor Sub-Servicers that qualifies under Section 8.3.

                  SECTION 8.5. LIABILITY OF MASTER SERVICER. The Master Servicer
shall not be relieved of its obligations under this Agreement notwithstanding
any Sub-Servicing Agreement between the Master Servicer and a Sub-Servicer or
otherwise, and the Master Servicer shall be obligated to the same extent and
under the same terms and conditions as if it alone were servicing and
administering the Mortgage Loans. The Master Servicer shall be entitled to enter
into any agreement with a Sub-Servicer for indemnification of the Master
Servicer by such Sub-Servicer and nothing contained in such Sub-Servicing
Agreement shall be deemed to limit or modify this Agreement. The Trust shall not
indemnify the Master Servicer for any losses due to the Master Servicer's
negligence.

                  SECTION 8.6. NO CONTRACTUAL RELATIONSHIP BETWEEN SUB-SERVICER
AND TRUSTEE OR THE OWNERS. Any Sub-Servicing Agreement and any other
transactions or services relating to the Mortgage Loans involving a Sub-Servicer
shall be deemed to be between the Sub-Servicer and the Master Servicer alone and
the Certificate Insurer, the Trustee and the Owners shall not be deemed parties
thereto and shall have no claims, rights, obligations, duties or liabilities
with respect to any Sub-Servicer except as set forth in Section 8.7.

                  SECTION 8.7. ASSUMPTION OR TERMINATION OF SUB-SERVICING
AGREEMENT BY TRUSTEE. In connection with the assumption of the responsibilities,
duties and liabilities and of the authority, power and rights of the Master
Servicer hereunder by the Trustee pursuant to Section 8.20, it is understood and
agreed that the Master Servicer's rights and obligations under any Sub-Servicing
Agreement then in force between the Master Servicer and a Sub-Servicer may be
assumed or terminated by the Trustee at its option. Any termination fee due
under any such



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<PAGE>   87


Sub-Servicing agreement shall be paid by the preceding Master Servicer but in no
event shall the Trustee be liable for any such fee.

                  The Master Servicer shall, upon request of the Trustee, but at
the expense of the Master Servicer, deliver to the assuming party documents and
records relating to each Sub-Servicing Agreement and an accounting of amounts
collected and held by it and otherwise use its best reasonable efforts to effect
the orderly and efficient transfer of the Sub-Servicing Agreements to the
assuming party, without the payment of any fee by the Trustee, notwithstanding
any contrary provision in any Sub-Servicing Agreement.

                  SECTION 8.8. PRINCIPAL AND INTEREST ACCOUNT.

                  (a) The Master Servicer and/or each Sub-Servicer, as
applicable, shall establish and maintain at one or more Designated Depository
Institutions in the name of the Trust for the benefit of the Owners of the
Certificates and the Certificate Insurer, as their interests may appear, a
Principal and Interest Account. The establishment of the Principal and Interest
Account shall be evidenced by the Master Servicer's delivery of a notice in the
form of Exhibit B hereto, properly completed.

                  Subject to Subsections (c) and (e) below, the Master Servicer
and any Sub-Servicer shall deposit all receipts of principal and accrued
interest related to the Mortgage Loans in each such Mortgage Loan Group to the
Principal and Interest Account on a daily basis (but no later than the second
Business Day after receipt).

                  (b) All funds in the Principal and Interest Account may only
be held (i) uninvested, up to the limits insured by the FDIC or (ii) invested in
Eligible Investments. The Principal and Interest Account shall be held in trust
in the name of the Trust and for the benefit of the Owners of the Certificates
and the Certificate Insurer. Any investment earnings on funds held in the
Principal and Interest Account shall be for the account of the Master Servicer
and may only be withdrawn from the Principal and Interest Account by the Master
Servicer immediately following the remittance of the Monthly Remittance Amounts
by the Master Servicer. Any references herein to amounts on deposit in the
Principal and Interest Account shall refer to amounts net of such investment
earnings. Any investment losses are at the expense of the Master Servicer and
shall be replaced on or prior to the Remittance Date.

                  (c) With respect to the Mortgage Loans and subject to
Subsection (e) below, the Master Servicer shall deposit to the Principal and
Interest Account all principal collected and interest accrued on or after the
Initial Cut-Off Date, related Subsequent Cut-Off Date or Replacement Cut-Off
Date including any Prepaid Installments, Prepayments, Net Liquidation Proceeds,
all Loan Purchase Prices and Substitution Amounts received or paid by the Master
Servicer, other recoveries or amounts received by the Master Servicer,
Compensating Interest and Delinquency Advances together with any amounts which
are reimbursable from such Principal and Interest Account, but net of (i) the
Servicing Fee and other servicing compensation due to the Master Servicer as
permitted by Section 8.15 hereof, (ii) principal (including Prepayments)
collected on the related Mortgage Loans prior to the Initial Cut-Off Date,
Subsequent Cut-Off Date or Replacement Cut-Off Date (iii) interest accruing on
the related Mortgage Loans prior to the Initial Cut-Off Date, Subsequent Cut-Off
Date or Replacement Cut-Off Date and (iv) Net Liquidation Proceeds to the extent
such Net Liquidation Proceeds exceed the sum of the Loan Balance of the related
Mortgage Loan and accrued and unpaid interest thereon.



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<PAGE>   88


                  (d) (i) The Master Servicer may make withdrawals from the
Principal and Interest Account only for the following purposes:

                           (1) to effect the timely remittance to the Trustee of
                  the Monthly Remittance Amounts due on the Remittance Date;

                           (2) to reimburse itself pursuant to Section 8.9(a)
                  hereof for unreimbursed Delinquency Advances and Servicing
                  Advances and Nonrecoverable Advances;

                           (3) to withdraw investment earnings on amounts on
                  deposit in the Principal and Interest Account, if such
                  investment earnings have been deposited in the Principal and
                  Interest Account;

                           (4) to withdraw amounts that have been deposited to a
                  Principal and Interest Account in error;

                           (5) to clear and terminate each Principal and
                  Interest Account following the termination of the Trust
                  pursuant to Article X; and

                           (6) to invest in Eligible Investments.

                  (ii) On the tenth day of each month, the Master Servicer shall
         send to the Trustee a computer tape, detailing the payments on the
         Mortgage Loans during the prior Remittance Period. Such tape shall be
         in the form and have the specifications as may be agreed to between the
         Master Servicer and the Trustee from time to time. The Certificate
         Insurer shall have the right to request this computer tape upon
         providing 3 Business Days written notice to the Master Servicer. Upon
         any change in the format of the electronic medium maintained by the
         Master Servicer in respect of the Mortgage Loans, the Master Servicer
         shall deliver a copy of such electronic medium to the Trustee.

                  (iii) On each Remittance Date the Master Servicer shall remit
         to the Trustee by wire transfer in immediately available funds for
         deposit in the Certificate Account the amounts specified in Section
         7.5(a) of this Agreement, (A) for Group I, the Group I Interest
         Remittance Amount and the Group I Principal Remittance Amount and (B)
         for Group II, the Group II Interest Remittance Amount and the Group II
         Principal Remittance Amount.

                  (e) To the extent that the ratings, if any, then assigned to
the unsecured debt of the Master Servicer or of the Master Servicer's ultimate
corporate parent are satisfactory to the Certificate Insurer and each Rating
Agency, then the requirement to maintain the Principal and Interest Account and
deposit of principal collections and accrued interest may be waived by an
instrument signed by the Certificate Insurer and each Rating Agency, and the
Master Servicer may be allowed to co-mingle with its general funds the amounts
otherwise required to be deposited to the Principal and Interest Account, on
such terms and subject to such conditions as the Certificate Insurer and each
Rating Agency may permit.


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<PAGE>   89


                  SECTION 8.9. DELINQUENCY ADVANCES, COMPENSATING INTEREST AND
SERVICING ADVANCES.

                  (a) The Master Servicer is required, not later than each
Remittance Date, to deposit into the Principal and Interest Account an amount
equal to the sum of the interest portions accrued (net of the Servicing Fees and
certain other administrative amounts, if any) with respect to Delinquent
Mortgage Loans during the related Remittance Period but not collected on or
prior to such Remittance Date, but only if, in its good faith business judgment,
the Master Servicer reasonably believes that such amount will ultimately be
recoverable from the related Mortgage Loan. Such amounts are "Delinquency
Advances".

                  The Master Servicer shall be permitted to fund its payment of
Delinquency Advances on any Remittance Date and to reimburse itself for any
Delinquency Advances paid from the Master Servicer's own funds, from subsequent
collections on the related Mortgage Loan. The Master Servicer may use funds
deposited to the Principal and Interest Account subsequent to the related
Remittance Period and shall deposit into the Principal and Interest Account with
respect thereto (i) late collections from the Mortgagor whose Delinquency gave
rise to the shortfall which resulted in such Delinquency Advance and (ii) Net
Liquidation Proceeds recovered on account of the related Mortgage Loan to the
extent of the amount of aggregate Delinquency Advances related thereto or (iii)
from its own funds. If not therefore recovered from the related Mortgagor or the
related Net Liquidation Proceeds, Delinquency Advances constituting
Nonrecoverable Advances shall be recoverable pursuant to Section 7.5(b)(E)(3)
hereof.

                  The parties hereto intend the provision of this Section 8.9(a)
to comply with Treasury Regulation Section 1.860G-2(c)(3).

                  (b) On or prior to each Remittance Date, the Master Servicer
shall deposit in the Principal and Interest Account with respect to any full
Prepayment received on a Mortgage Loan during the related Remittance Period out
of its own funds without any right of reimbursement therefor, an amount equal to
the difference between (x) 30 days' interest at the Mortgage Loan's Coupon Rate
(less the Servicing Fee) on the Loan Balance of such Mortgage Loan as of the
first day of the related Remittance Period and (y) the interest (less the
Servicing Fee) paid by the Mortgagor with respect to the Mortgage Loan during
such Remittance Period. Such amount is "Compensating Interest". The Master
Servicer shall in no event be required to pay Compensating Interest with respect
to any Remittance Period in an amount in excess of the aggregate Servicing Fee
received by the Master Servicer with respect to all Mortgage Loans for such
Remittance Period nor shall it be required to pay Compensating Interest due to
partial prepayments or Relief Act Shortfalls.

                  The parties hereto intend the provisions of this Section
8.9(b) to comply with Treasury Regulation Section 1.860G-2(e).

                  (c) The Master Servicer will pay all "out-of-pocket" costs and
expenses incurred by the Master Servicer in the performance of its servicing
obligations, including, but not limited to, the cost of (i) Preservation
Expenses (including the payment of flood insurance premiums), (ii) any
enforcement or judicial proceedings, including (a) foreclosures, and (b) other
legal actions and costs associated therewith that potentially affect the
existence, validity, priority, enforceability or collectibility of the Mortgage
Loans, including collection agency fees and costs of pursuing or obtaining
personal judgments, garnishments, levies, attachment and similar actions, (iii)
the conservation, management, liquidation, sale or other disposition of any



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Mortgaged Property acquired in satisfaction of the related Mortgage Loan,
including reasonable fees paid to any independent contractor in connection
therewith, and (iv) advances to keep liens current; and with respect to any of
the foregoing, the Master Servicer is only required to pay such costs and
expenses to the extent the Master Servicer reasonably believes such costs and
expenses will be recoverable from the related Mortgage Loan. Each such amount so
paid will constitute a "Servicing Advance". The Master Servicer may recover
Servicing Advances (x) from the Mortgagors to the extent permitted by the
Mortgage Loans, (y) from Liquidation Proceeds realized upon the liquidation of
the related Mortgage Note and (z) as provided in Section 7.5(b)(E)(3) hereof. In
no case may the Master Servicer recover Servicing Advances from principal and
interest payments on any other Mortgage Loan or from any amounts relating to any
other Mortgage Loan except as provided pursuant to Section 7.5(b)(E)(3) hereof.

                  The parties intend that the provisions of this Section 8.9(c)
comply with Treasury Regulation Section 1.860G-2(c)(3)(iii).

                  (d) On the first Remittance Date following the Startup Day,
the Master Servicer shall make an advance (a "Special Advance") with respect to
each Mortgage Loan Group equal to the sum of (x) one-month's interest,
calculated at the weighted average Pass-Through Rate (applicable to such Payment
Date, as the case may be, for the classes of Class A Certificates related to
such Group) with respect to all Mortgage Loans not having a payment due prior to
the June 1999 Remittance Date; the amounts of such Special Advances shall be
included in the related Interest Remittance Amount. Reimbursement of Special
Advances shall be made only as provided in Section 7.5(b)(E)(3).

                  SECTION 8.10. PURCHASE OF MORTGAGE LOANS. The Master Servicer
may, but is not obligated to, purchase for its own account any Mortgage Loan
which becomes Delinquent, in whole or in part, as to four consecutive monthly
installments or any Mortgage Loan as to which enforcement proceedings have been
brought by the Master Servicer or by any Sub-Servicer pursuant to Section 8.13.
Any such Mortgage Loan shall be purchased by the Master Servicer on a Remittance
Date at a purchase price equal to the Loan Purchase Price thereof, which
purchase price shall be deposited in the Principal and Interest Account.
Notwithstanding the foregoing, the Master Servicer may not purchase any such
Mortgage Loan unless the Master Servicer has delivered to the Trustee and the
Certificate Insurer an opinion of counsel experienced in federal income tax
matters acceptable to the Trustee to the effect that such a purchase would not
constitute a Prohibited Transaction for the Trust or otherwise subject the Trust
to tax and would not jeopardize the status of either the Upper-Tier REMIC or the
Lower-Tier REMIC as a REMIC.

                  SECTION 8.11. MAINTENANCE OF INSURANCE.

                  (a) The Master Servicer shall cause to be maintained with
respect to each Mortgage Loan either a blanket insurance policy as described in
Section 8.11(c) hereof or a hazard insurance policy that provides for fire and
extended coverage, and which provides for a recovery by the Master Servicer on
behalf of the Trust of insurance proceeds relating to such Mortgage Loan in an
amount not less than the least of (i) the outstanding principal balance of the
Mortgage Loan, (ii) the minimum amount required to compensate for damage or loss
on a replacement cost basis and (iii) the full insurable value of the premises.

                  (b) If the Mortgage Loan at the time of origination relates to
a Property in an area identified in the Federal Register by the Federal
Emergency Management Agency as having special flood hazards, the Master Servicer
will cause to be maintained with respect thereto either a blanket policy as
described in Section 8.11(c) hereof or a flood insurance policy in a form



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meeting the requirements of the current guidelines of the Federal Insurance
Administration. Such policy shall provide for a recovery by the Master Servicer
on behalf of the Trust of insurance proceeds relating to such Mortgage Loan of
not less than the least of (i) the outstanding principal balance of the Mortgage
Loan, (ii) the minimum amount required to compensate for damage or loss on a
replacement cost basis and (iii) the maximum amount of insurance that is
available under the Flood Disaster Protection Act of 1973. The Master Servicer
shall indemnify the Trust and the Certificate Insurer out of the Master
Servicer's own funds for any loss to the Trust and the Certificate Insurer
resulting from the Master Servicer's failure to maintain the insurance required
by this Section.

                  (c) In the event that the Master Servicer shall obtain and
maintain a blanket insurance policy insuring against fire, flood and hazards of
extended coverage on all of the Mortgage Loans, then, to the extent such policy
names the Master Servicer as loss payee and provides coverage in an amount equal
to the aggregate unpaid principal balance on the Mortgage Loans without
co-insurance, and otherwise complies with the requirements of this Section 8.11,
the Master Servicer shall be deemed conclusively to have satisfied its
obligations with respect to fire, flood and hazard insurance coverage under this
Section 8.11. Such blanket policy may contain a deductible clause, in which case
the Master Servicer shall, in the event that there shall not have been
maintained on the related Property a policy complying with paragraphs (a) and
(b) of this Section 8.11, and there shall have been a loss which would have been
covered by such policy, deposit in the Principal and Interest Account from the
Master Servicer's own funds the difference, if any, between the amount that
would have been payable under a policy complying with paragraphs (a) and (b) of
this Section 8.11 and the amount paid under such blanket policy. Upon the
request of the Trustee or the Certificate Insurer, the Master Servicer shall
cause to be delivered to the Trustee or the Certificate Insurer, a certified
true copy of such policy.

                  The parties hereto intend that the provisions of this Section
8.11 comply with Treasury Regulation Section 1.860G-2(c)(3)(ii).

                  SECTION 8.12. DUE-ON-SALE CLAUSES; ASSUMPTION AND SUBSTITUTION
AGREEMENTS. When a Property has been or is about to be conveyed by the
Mortgagor, the Master Servicer shall, to the extent it has knowledge of such
conveyance or prospective conveyance, exercise its rights to accelerate the
maturity of the related Mortgage Loan under any "due-on-sale" clause contained
in the related Mortgage or Note; provided, however, that the Master Servicer
shall not exercise any such right if (i) the "due-on-sale" clause, in the
reasonable belief of the Master Servicer, is not enforceable under applicable
law or (ii) the Master Servicer reasonably believes that to permit an assumption
of the Mortgage Loan would not materially and adversely affect the interest of
the Owners or of the Certificate Insurer. In such event, the Master Servicer
shall enter into an assumption and modification agreement with the person to
whom such property has been or is about to be conveyed, pursuant to which such
person becomes liable under the Note and, unless prohibited by applicable law or
the Mortgage Documents, the Mortgagor remains liable thereon. If the foregoing
is not permitted under applicable law, the Master Servicer is authorized to
enter into a substitution of liability agreement with such person, pursuant to
which the original Mortgagor is released from liability and such person is
substituted as Mortgagor and becomes liable under the Note; provided, however,
that to the extent any such substitution of liability agreement would be
delivered by the Master Servicer outside of its usual procedures for mortgage
loans held in its own portfolio the Master Servicer shall, prior to executing
and delivering such agreement, obtain the prior written consent of the Control
Party. The Mortgage Loan, as assumed, shall conform in all respects to the
requirements, representations and warranties of this Agreement. The Master
Servicer shall notify the Trustee that any such assumption or substitution
agreement has been completed by forwarding to the



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Trustee the original copy of such assumption or substitution agreement, which
copy shall be added by the Trustee to the related File and which shall, for all
purposes, be considered a part of such File to the same extent as all other
documents and instruments constituting a part thereof. The Master Servicer shall
be responsible for recording or causing the recordation any such assumption or
substitution agreements. In connection with any such assumption or substitution
agreement, the required monthly payment on the related Mortgage Loan shall not
be changed but shall remain as in effect immediately prior to the assumption or
substitution, the stated maturity or outstanding principal amount of such
Mortgage Loan shall not be changed nor shall any required monthly payments of
principal or interest be deferred or forgiven. Any fee collected by the Master
Servicer or the Sub-Servicer for consenting to any such conveyance or entering
into an assumption or substitution agreement shall be retained by or paid to the
Master Servicer as additional servicing compensation.

                  Notwithstanding the foregoing paragraph or any other provision
of this Agreement, the Master Servicer shall not be deemed to be in default,
breach or any other violation of its obligations hereunder by reason of any
assumption of a Mortgage Loan by operation of law or any assumption which the
Master Servicer may be restricted by law from preventing, for any reason
whatsoever.

                  SECTION 8.13. REALIZATION UPON DEFAULTED MORTGAGE LOANS.

                  (a) The Master Servicer shall foreclose upon or otherwise
comparably effect the ownership on behalf of the Trust of Properties relating to
defaulted Mortgage Loans as to which no satisfactory arrangements can be made
for collection of Delinquent payments and which the Master Servicer has not
purchased pursuant to Section 8.10. In connection with such foreclosure or other
conversion, the Master Servicer shall exercise such of the rights and powers
vested in it hereunder, and use the same degree of care and skill in their
exercise or use, as prudent mortgage lenders would exercise or use under the
circumstances in the conduct of their own affairs, including, but not limited
to, advancing funds for the payment of taxes, amounts due with respect to Senior
Liens, and insurance premiums. Any amounts so advanced shall constitute
"Servicing Advances" within the meaning of Section 8.9(c) hereof. The Master
Servicer shall sell any REO Property within 35 months of its acquisition by the
Trust, unless the Master Servicer obtains for the Trustee an opinion of counsel
experienced in federal income tax matters, addressed to the Trustee, the
Certificate Insurer and the Master Servicer, to the effect that the holding by
the Trust of such REO Property for any greater period will not result in the
imposition of taxes on "Prohibited Transactions" of the Trust or any REMIC
therein as defined in Section 860F of the Code or cause either the Lower-Tier
REMIC or the Upper-Tier REMIC to fail to qualify as a REMIC under the REMIC
Provisions at any time that any Certificates are outstanding.

                  Notwithstanding the generality of the foregoing provisions,
the Master Servicer shall manage, conserve, protect and operate each REO
Property for the Owners and the Certificate Insurer solely for the purpose of
its prompt disposition and sale in a manner which does not cause such REO
Property to fail to qualify as "foreclosure property" within the meaning of
Section 860G(a)(8) of the Code or result in the receipt by the Lower-Tier REMIC
or the Upper Tier REMIC of any "income from non-permitted assets" within the
meaning of Section 860F(a)(2)(B) of the Code or any "net income from foreclosure
property" which is subject to taxation under the REMIC Provisions. Pursuant to
its efforts to sell such REO Property, the Master Servicer shall either itself
or through an agent selected by the Master Servicer protect and conserve such
REO Property in the same manner and to such extent as is customary in the
locality where such REO Property is located and may, incident to its
conservation and protection



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of the interests of the Owners, rent the same, or any part thereof, as the
Master Servicer deems to be in the best interest of the Owners for the period
prior to the sale of such REO Property. The Master Servicer shall take into
account the existence of any hazardous substances, hazardous wastes or solid
wastes, as such terms are defined in the Comprehensive Environmental Response
Compensation and Liability Act, the Resource Conservation and Recovery Act of
1976, or other federal, state or local environmental legislation, on a REO
Property in determining whether to foreclose upon or otherwise comparably
convert the ownership of such REO Property. With respect to any Mortgage Loan
secured by a mixed use REO Property, the Master Servicer shall, prior to
foreclosing upon or otherwise comparably effecting the ownership in the name of
the Master Servicer on behalf of the Trust, either (x) perform a "phase one
environmental study" of such REO Property or (y) repurchase such REO Property at
the Loan Purchase Price.

                  (b) The Master Servicer shall determine, with respect to each
defaulted Mortgage Loan, when it has recovered, whether through trustee's sale,
foreclosure sale or otherwise, all amounts it expects to recover from or on
account of such defaulted Mortgage Loan (exclusive of any possibility of a
deficiency judgment), whereupon such Mortgage Loan shall become a "Liquidated
Loan" and, if requested, shall promptly deliver to the Certificate Insurer a
related liquidation report with respect to such Liquidated Loan.

                  SECTION 8.14. TRUSTEE TO COOPERATE; RELEASE OF FILES.

                  (a) Upon the payment in full of any Mortgage Loan (including
the repurchase of any Mortgage Loan or any liquidation of such Mortgage Loan
through foreclosure or otherwise), or the receipt by the Master Servicer or any
Sub-Servicer of a notification that payment in full will be escrowed in a manner
customary for such purposes, the Master Servicer or any Sub-Servicer shall
deliver to the Trustee a Master Servicer's Trust Receipt. Upon receipt of such
Master Servicer's Trust Receipt, the Trustee shall promptly release the related
Mortgage File, as directed by the Master Servicer in the Master Servicer's Trust
Receipt. Upon any such payment in full, or the receipt of such notification that
such funds have been placed in escrow, the Master Servicer or any Sub-Servicer
is authorized to give, as attorney-in-fact for the Trustee and the mortgagee
under the Mortgage which secured the Note, an instrument of satisfaction (or
assignment of Mortgage without recourse) regarding the Property relating to such
Mortgage, which instrument of satisfaction or assignment, as the case may be,
shall be delivered to the Person or Persons entitled thereto against receipt
therefor of payment in full, it being understood and agreed that no expense
incurred in connection with such instrument of satisfaction or assignment, as
the case may be, shall be chargeable to the Principal and Interest Account. In
lieu of executing any such satisfaction or assignment the Master Servicer or any
Sub-Servicer may prepare and submit to the Trustee, a satisfaction (or
assignment without recourse, if requested by the Person or Persons entitled
thereto) in form for execution by the Trustee with all requisite information
completed by the Master Servicer or any Sub-Servicer; in such event, the Trustee
shall execute and acknowledge such satisfaction or assignment and deliver the
same with the related File, as aforesaid.

                  (b) From time to time and as appropriate in the servicing of
any Mortgage Loan, including, without limitation, foreclosure or other
comparable conversion of a Mortgage Loan or collection under any applicable
Mortgage Insurance Policy, the Trustee shall (except in the case of the payment
or liquidation pursuant to which the related File is released to an escrow agent
or an employee, agent or attorney of the Trustee), upon request of the Master
Servicer or any Sub-Servicer and delivery to the Trustee of a Master Servicer's
Trust Receipt, release the related File to the Master Servicer and shall execute
such documents as shall be necessary to the prosecution of any such proceedings,
including, without limitation, an assignment without



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recourse of the related Mortgage to the Master Servicer; provided that the
Master Servicer shall not have received and not returned at any one time more
than 10% of the entire number of Files. The Trustee shall complete in the name
of the Trustee any endorsement in blank on any Note prior to releasing such Note
to the Master Servicer or any Sub-Servicer. Such receipt shall obligate the
Master Servicer or any Sub-Servicer to return the File to the Trustee when the
need therefor by the Master Servicer or any Sub-Servicer no longer exists unless
the Mortgage Loan shall be liquidated, in which case, upon receipt of the
liquidation information, in physical or electronic form acceptable to the Master
Servicer and the Trustee, a copy of the Master Servicer's Trust Receipt shall be
released by the Trustee to the Master Servicer or any Sub-Servicer.

                  (c) No costs associated with the procedures described in this
Section 8.14 shall be an expense of the Trust.

                  (d) The provisions set forth in Subsections (a) and (b) may be
superseded by any waiver of the Document Delivery Requirement as may be given by
the Certificate Insurer and the Rating Agencies pursuant to Section 3.5(j)
hereof.

                  (e) Each Master Servicer's Trust Receipt may be delivered to
the Trustee (i) via mail or courier, (ii) via facsimile or (iii) by such other
means, including, without limitation, electronic or computer readable medium, as
the Master Servicer and the Trustee shall mutually agree. The Trustee shall
promptly release the related File(s) no later than seven (7) business days of
receipt of a properly completed Master Servicer's Trust Receipt or such shorter
period as may be agreed upon by the Master Servicer and the Trustee. Receipt of
a Master Servicer's Trust Receipt shall be authorization to the Trustee to
release such Files, provided the Trustee has determined that such Master
Servicer's Trust Receipt has been executed, with respect to clauses (i) or (ii)
above, or approved, with respect to clause (iii) above, by an Authorized Officer
of the Master Servicer or any Sub-Servicer, and so long as the Trustee complies
with its duties and obligations under this Agreement. If the Trustee is unable
to release the Files within the time frames previously specified, the Trustee
shall immediately notify the Master Servicer or any Sub-Servicer indicating the
reason for such delay, but in no event shall such notification be later than
five business days after receipt of a Master Servicer's Trust Receipt. If the
Master Servicer is required to pay penalties or damages due to the Trustee's
negligent failure to release the related File or the Trustee's negligent failure
to execute and release documents in a timely manner, the Trustee shall be liable
for such penalties or damages.

                  SECTION 8.15. SERVICING COMPENSATION. As compensation for its
activities hereunder, the Master Servicer shall be entitled to retain the amount
of the Servicing Fee with respect to each Mortgage Loan. Additional servicing
compensation in the form of investment income on the Principal and Interest
Account, the Capitalized Interest Account, and on the Certificate Account,
prepayment charges, release fees, bad check charges, assumption fees, late
payment charges, any other servicing-related fees, Net Liquidation Proceeds not
required to be deposited in the Principal and Interest Account pursuant to
Section 8.8(c)(v) and similar items may, to the extent collected from
Mortgagors, be retained by the Master Servicer.

                  SECTION 8.16. ANNUAL STATEMENT AS TO COMPLIANCE. The Master
Servicer, at its own expense, will deliver to the Trustee and the Certificate
Insurer, on or before the last day of March of each year, commencing in the year
2000, an Officer's Certificate stating, as to each signer thereof, that (i) a
review of the activities of the Master Servicer during such preceding calendar
year and of performance under this Agreement has been made under such officers'
supervision, and (ii) to the best of such officers' knowledge, based on such
review, the Master Servicer has fulfilled all its obligations under this
Agreement for such year, or, if there has been a



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default in the fulfillment of all such obligations, specifying each such default
known to such officers and the nature and status thereof including the steps
being taken by the Master Servicer to remedy such defaults.

                  SECTION 8.17. ANNUAL INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS'
REPORTS. On or before the last day of March of each year, commencing in the year
2000, the Master Servicer, at its own expense, shall cause to be delivered to
the Trustee and the Certificate Insurer a letter or letters of a firm of
independent, nationally recognized certified public accountants reasonably
acceptable to the Control Party stating that such firm has, with respect to the
Master Servicer's overall servicing operations (i) performed applicable tests in
accordance with the compliance testing procedures as set forth in Appendix 3 of
the Audit Guide for Audits of HUD Approved Nonsupervised Mortgagees or (ii)
examined such operations in accordance with the requirements of the Uniform
Single Attestation Program for Mortgage Bankers, and in either case stating such
firm's conclusions relating thereto or (iii) examined such operations in
accordance with the requirements of SAS 70.

                  SECTION 8.18. ACCESS TO CERTAIN DOCUMENTATION AND INFORMATION
REGARDING THE MORTGAGE LOANS. The Master Servicer shall provide to the Trustee
and the Certificate Insurer access to the documentation regarding the Mortgage
Loans required by applicable state and federal regulations, such access being
afforded without charge but only upon reasonable request and during normal
business hours at the offices of the Master Servicer.

                  SECTION 8.19. ASSIGNMENT OF AGREEMENT. The Master Servicer may
not assign its obligations under this Agreement, in whole or in part, unless it
shall have first obtained the written consent of the Trustee and the Certificate
Insurer, which such consent shall not be unreasonably withheld; provided,
however, that any assignee must meet the eligibility requirements set forth in
Section 8.20(g) hereof for a successor servicer; and provided, further, this
Section 8.19 does not apply to the appointment of Sub-Servicers or to any
assignment to a Master Servicer Affiliate. Notice of any such assignment shall
be given by the Master Servicer to the Trustee, the Certificate Insurer and
Moody's.

                  SECTION 8.20. REMOVAL OF MASTER SERVICER; RESIGNATION OF
MASTER SERVICER.

                  (a) The Trustee, with the consent of the Certificate Insurer
(or the Owners pursuant to Section 6.11 hereof) may remove the Master Servicer
upon the occurrence of any of the following events:

                  (i) The Master Servicer shall fail to deliver to the Trustee
         any proceeds or required payment, which failure continues unremedied
         for five Business Days following written notice to an Authorized
         Officer of the Master Servicer from the Trustee or from any Owner.

                  (ii) The Master Servicer shall (i) apply for or consent to the
         appointment of a receiver, trustee, liquidator or custodian or similar
         entity with respect to itself or its property, (ii) admit in writing
         its inability to pay its debts generally as they become due, (iii) make
         a general assignment for the benefit of creditors, (iv) be adjudicated
         a bankrupt or insolvent, (v) commence a voluntary case under the
         federal bankruptcy laws of the United States of America or file a
         voluntary petition or answer seeking reorganization, an arrangement
         with creditors or an order for relief or seeking to take advantage of
         any insolvency law or file an answer admitting the material allegations
         of a petition filed



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         against it in any bankruptcy, reorganization or insolvency proceeding
         or (vi) take corporate action for the purpose of effecting any of the
         foregoing;

                  (iii) If without the application, approval or consent of the
         Master Servicer, a proceeding shall be instituted in any court of
         competent jurisdiction, under any law relating to bankruptcy,
         insolvency, reorganization or relief of debtors, seeking in respect of
         the Master Servicer an order for relief or an adjudication in
         bankruptcy, reorganization, dissolution, winding up, liquidation, a
         composition or arrangement with creditors, a readjustment of debts, the
         appointment of a trustee, receiver, liquidator or custodian or similar
         entity with respect to the Master Servicer or of all or any substantial
         part of its assets, or other like relief in respect thereof under any
         bankruptcy or insolvency law, and, if such proceeding is being
         contested by the Master Servicer in good faith, the same shall (A)
         result in the entry of an order for relief or any such adjudication or
         appointment or (B) continue undismissed or pending and unstayed for any
         period of seventy-five (75) consecutive days; or

                  (iv) The Master Servicer shall fail to perform any one or more
         of its obligations hereunder other than the obligations contemplated by
         Subsection 8.20(i) above, and shall continue in default thereof for a
         period of sixty (60) days after notice by the Trustee or the
         Certificate Insurer of said failure; provided, however, that if the
         Master Servicer can demonstrate to the reasonable satisfaction of the
         Control Party that it is diligently pursuing remedial action, then the
         cure period may be extended with the written approval of the Control
         Party; or

                  (v) The Master Servicer shall fail to cure any breach of any
         of its representations and warranties set forth in Section 3.2 which
         materially and adversely affects the interests of the Owners or the
         Certificate Insurer for a period of thirty (30) days after the Master
         Servicer's discovery or receipt of notice thereof; provided, however,
         that if the Master Servicer can demonstrate to the reasonable
         satisfaction of the Control Party that it is diligently pursuing
         remedial action, then the cure period may be extended with the written
         approval of the Control Party.

                  (b) The Certificate Insurer also may remove the Master
Servicer upon the occurrence of any of the following events:

                  (i) upon the making of any Insured Payment; provided, however,
         that the Certificate Insurer shall have no right to remove the Master
         Servicer under this clause (i) if the Master Servicer can demonstrate
         to the reasonable satisfaction of the Certificate Insurer that such
         event was due to circumstances beyond the control of the Master
         Servicer; or

                  (ii) the failure by the Master Servicer to make any required
         Servicing Advance; or

                  (iii) the failure by the Master Servicer to perform any one or
         more of its obligations hereunder or under the Insurance Agreement,
         which failure materially and adversely affects the interests of the
         Certificate Insurer and the Trustee; or

                  (iv) the failure by the Master Servicer to make any required
         Delinquency Advance, any Special Advance or to pay any Compensating
         Interest; or


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                  (v) the occurrence of a Servicer Termination Loss Trigger or
         of a Servicer Termination Delinquency Trigger, as such terms are
         defined in the Insurance Agreement; or

                  (vi) the enactment of any law by a legislative body that
         declares, or any finding or ruling by a court of competent
         jurisdiction, that the Insurance Agreement or this Agreement is not
         valid and binding on the Sponsor or the Master Servicer; or

                  (vii) The tangible net worth of AMHC, on a consolidated basis,
         is less than $10,000,000;

provided, however, with respect to clause (iv), if the Master Servicer can
demonstrate to the reasonable satisfaction of the Control Party that any such
event was due to circumstances beyond the control of the Master Servicer, such
event shall not be considered an event of termination of the Master Servicer;

provided, however, that (x) prior to any removal of the Master Servicer by the
Control Party pursuant to clauses (i) or (ii) of this Section 8.20(b), the
Master Servicer shall first have been given by the Control Party and by
registered or certified mail, notice of the occurrence of one or more of the
events set forth in clauses (i), (ii) or (iii) above and the Master Servicer
shall not have remedied, or shall not have taken actions satisfactory to the
Control Party to remedy, such event or events within 30 days (60 days with
respect to clause (iii)) after the Master Servicer's receipt of such notice
(provided, however, that if the Master Servicer can demonstrate to the
reasonable satisfaction of the Control Party that it is diligently pursuing
remedial action, then the cure period in each case may be extended with the
written approval of the Control Party) and (y) in the event of the refusal or
inability of the Master Servicer to make any required Delinquency Advance or
Special Advance or to pay any Compensating Interest (as described in clause
(iv)) or Monthly Remittance, such removal shall be effective (without the
requirement of any action on the part of the Certificate Insurer or of the
Trustee) at 4 p.m. on the second Business Day following the day on which the
Trustee or the Certificate Insurer notifies an Authorized Officer of the Master
Servicer that a required Delinquency Advance or Special Advance has not been
received by the Trustee. Upon the Trustee's determination that a required
Delinquency Advance or Special Advance or payment of Compensating Interest has
not been made by the Master Servicer, the Trustee shall so notify in writing an
Authorized Officer of the Master Servicer and the Certificate Insurer as soon as
is reasonably practical.

                  (c) The Master Servicer shall not resign from the obligations
and duties hereby imposed on it, except upon determination that its duties
hereunder are no longer permissible under applicable law or are in material
conflict by reason of applicable law with any other activities carried on by it,
the other activities of the Master Servicer so causing such a conflict being of
a type and nature carried on by the Master Servicer at the date of this
Agreement. Any such determination permitting the resignation of the Master
Servicer shall be evidenced by an opinion of counsel to such effect which shall
be delivered to the Trustee and the Certificate Insurer.

                  (d) No removal or resignation of the Master Servicer shall
become effective until the Trustee or a successor servicer shall have assumed
the Master Servicer's responsibilities and obligations in accordance with this
Agreement. If no successor servicer is available, the Trustee shall act as
successor servicer and perform all of the obligations of this Agreement,
including, without limitation, making Delinquency Advances, Servicing Advances
and paying



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Compensating Interest; provided, however, that the Trustee will not be obligated
to act as successor servicer if it is legally unable to perform its duties
hereunder.

                  (e) Upon removal or resignation of the Master Servicer, the
Master Servicer also shall promptly deliver or cause to be delivered to a
successor servicer or the Trustee all the books and records (including, without
limitation, records kept in electronic form) that the Master Servicer has
maintained for the Mortgage Loans, including all tax bills, assessment notices,
insurance premium notices and all other documents as well as all original
documents then in the Master Servicer's possession.

                  (f) Any collections received by the Master Servicer after
removal or resignation shall be endorsed by it to the Trustee and remitted
directly and immediately to the Trustee or the successor Master Servicer.

                  (g) Upon removal or resignation of the Master Servicer, the
Trustee (x) may solicit bids for a successor servicer as described below, and
(y) pending the appointment of a successor Master Servicer as a result of
soliciting such bids, shall serve as Master Servicer. The Trustee shall, if it
is unable to obtain a qualifying bid and is prevented by law from acting as
Master Servicer, appoint, or petition a court of competent jurisdiction to
appoint, any housing and home finance institution, bank or mortgage servicing
institution which has shareholders' equity of not less than $10,000,000, as
determined in accordance with generally accepted accounting principles, and
acceptable to the Certificate Insurer as the successor to the Master Servicer
hereunder in the assumption of all or any part of the responsibilities, duties
or liabilities of the Master Servicer hereunder. The compensation of any
successor servicer (including, without limitation, the Trustee) so appointed
shall be the aggregate Servicing Fees, together with the other servicing
compensation in the form of assumption fees, late payment charges or otherwise
as provided in Sections 8.8 and 8.15; provided, however, that if the Trustee
acts as successor Master Servicer then the Sponsor agrees to pay to the Trustee
at such time that the Trustee becomes such successor Master Servicer a fee of
twenty-five dollars ($25.00) for each Mortgage Loan then included in the Trust
Estate. The Trustee shall be obligated to serve as successor Master Servicer
whether or not the $25.00 fee described in the preceding sentence is paid by the
Sponsor, but shall in any event be entitled to receive, and to enforce payment
of, such fee from the Sponsor.

                  (h) In the event the Trustee solicits bids as provided above,
the Trustee shall solicit, by public announcement, bids from housing and home
finance institutions, banks and mortgage servicing institutions meeting the
qualifications set forth above. Such public announcement shall specify that the
successor Master Servicer shall be entitled to the compensation set forth in
clause (g) above. Within thirty days after any such public announcement, the
Trustee shall negotiate and effect the sale, transfer and assignment of the
servicing rights and responsibilities hereunder to the qualified party
submitting the highest satisfactory bid. The Trustee shall deduct from any sum
received by the Trustee from the successor to the Master Servicer in respect of
such sale, transfer and assignment all costs and expenses of any public
announcement and of any sale, transfer and assignment of the servicing rights
and responsibilities hereunder. After such deductions, the remainder of such sum
shall be paid by the Trustee to the Master Servicer at the time of such sale,
transfer and assignment to the Master Servicer's successor.

                  (i) The Trustee and such successor shall take such action,
consistent with this Agreement, as shall be necessary to effectuate any such
succession. The Master Servicer agrees to cooperate with the Trustee and any
successor Master Servicer in effecting the termination of the Master Servicer's
servicing responsibilities and rights hereunder and shall



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<PAGE>   99


promptly provide the Trustee or such successor Master Servicer, as applicable,
all documents and records reasonably requested by it to enable it to assume the
Master Servicer's functions hereunder and shall promptly also transfer to the
Trustee or such successor Master Servicer, as applicable, all amounts which then
have been or should have been deposited in the Principal and Interest Account by
the Master Servicer or which are thereafter received with respect to the
Mortgage Loans. Neither the Trustee nor any other successor Master Servicer
shall be held liable by reason of any failure to make, or any delay in making,
any distribution hereunder or any portion thereof caused by (i) the failure of
the Master Servicer to deliver, or any delay in delivering, cash, documents or
records to it, or (ii) restrictions imposed by any regulatory authority having
jurisdiction over the Master Servicer or (iii) any breaches of a predecessor
Master Servicer.

                  (j) The Trustee or any other successor Master Servicer, upon
assuming the duties of Master Servicer hereunder, shall immediately make all
Delinquency Advances and pay all Compensating Interest which the Master Servicer
has theretofore failed to remit with respect to the Mortgage Loans; provided,
however, that if the Trustee is acting as successor Master Servicer, the Trustee
shall only be required to make Delinquency Advances (including the Delinquency
Advances required to be made by the predecessor Master Servicer but not so
deposited) if, in the Trustee's reasonable good faith judgment, such Delinquency
Advances will ultimately be recoverable from the related Mortgage Loans.

                  (k) The Master Servicer which is being removed or is resigning
shall give notice to the Mortgagors and to each Rating Agency of the transfer of
the servicing to the successor.

                  (l) The Trustee shall give notice to the Certificate Insurer,
each Rating Agency and to the Owners of the occurrence of any event specified in
Section 8.20(a) of which the Trustee has knowledge.

                  (m) Notwithstanding anything herein to the contrary, upon
termination of the Master Servicer hereunder, any liabilities of the Master
Servicer which accrued prior to such termination shall survive such termination.

                  SECTION 8.21. INSPECTIONS BY THE CERTIFICATE INSURER AND THE
TRUSTEE; ERRORS AND OMISSIONS INSURANCE.

                  (a) At any reasonable time during business hours and from time
to time upon five Business Days' reasonable notice, the Certificate Insurer, the
Trustee, or any agents or representatives thereof may inspect the Master
Servicer's servicing operations and discuss the servicing operations of the
Master Servicer with any of its officers or directors. The reasonable costs and
expenses incurred by the Master Servicer in connection with any such
examinations or discussions shall be paid by the Master Servicer.

                  (b) The Master Servicer agrees to maintain errors and
omissions coverage and a fidelity bond, each at least to the extent generally
maintained by prudent mortgage loan servicers having servicing portfolios of a
similar size.

                  SECTION 8.22. MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION
TO BUSINESS OF MASTER SERVICER. Any corporation into which the Master Servicer
may be merged or converted or with which it may be consolidated, or any
corporation resulting from any merger, conversion or consolidation to which the
Master Servicer shall be a party, or any corporation



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succeeding to all or substantially all of the business of the Master Servicer,
shall be the successor of the Master Servicer hereunder upon notice to the
Certificate Insurer, without the execution or filing of any paper or any further
act on the part of any of the parties hereto provided that such corporation is a
housing and home finance institution, bank or mortgage servicing institution
which has shareholders' equity of not less than $10,000,000, as determined in
accordance with generally accepted accounting principles.

                  SECTION 8.23. NOTICES OF MATERIAL EVENTS. The Master Servicer
shall give prompt notice to the Certificate Insurer, the Trustee, and each
Rating Agency of the occurrence of any of the following events:

                  (a) Any default or any fact or event which results, or which
with notice or the passage of time, or both, would result in the occurrence of a
default by the Sponsor or the Master Servicer under any Transaction Document or
would constitute a material breach of a representation, warranty or covenant
under any Transaction Document which would have a material adverse effect on the
Owners or the Certificate Insurer;

                  (b) The submission of any claim or the initiation of any legal
process, litigation or administrative or judicial investigation against the
Sponsor, the Master Servicer or AMHC in any federal, state or local court or
before any governmental body or agency, or before any arbitration board, or any
such proceedings threatened by any governmental agency, which, if adversely
determined, would have a material adverse effect upon any the Sponsor's, the
Master Servicer's or AMHC's ability to perform its obligations under any
Transaction Document;

                  (c) The commencement of any proceedings by or against the
Sponsor, the Master Servicer or AMHC under any applicable bankruptcy,
reorganization, liquidation, insolvency or other similar law now or hereafter in
effect or of any proceeding in which a receiver, liquidator, trustee or other
similar official shall have been, or may be, appointed or requested for the
Sponsor, the Master Servicer or AMHC; and

                  (d) The receipt of notice from any agency or governmental body
having authority over the conduct of any of the Sponsor's the Master Servicer's
or the AMHC's business that the Sponsor, the Master Servicer or AMHC is to cease
and desist, or to undertake any practice, program, procedure or policy employed
by the Sponsor, the Master Servicer or AMHC in the conduct of the business of
any of them, and such cessation or undertaking will materially adversely affect
the conduct of the Sponsor's, the Master Servicer's or AMHC's business or its
ability to perform under the Transaction Documents or materially adversely
affect the financial affairs of the Sponsor, the Master Servicer or AMHC.


                                   ARTICLE IX

                              TERMINATION OF TRUST

                  SECTION 9.1. TERMINATION OF TRUST. The Trust created hereunder
and all obligations created by this Agreement will terminate upon the earlier of
(i) the payment to the Owners of all Certificates from amounts other than those
available under the Certificate Insurance Policy of all amounts held by the
Trustee and required to be paid to such Owners pursuant to this Agreement upon
the later to occur of (a) the final payment or other liquidation (or any advance
made with respect thereto) of the last Mortgage Loan in the Trust Estate or (b)
the disposition of all property acquired in respect of any Mortgage Loan
remaining in the Trust Estate, (ii) at any



                                       99
<PAGE>   101


time when a Qualified Liquidation of the REMIC Trust is effected as described
below or (iii) as described in Section 9.2 or 9.3 hereof. To effect a
termination of this Agreement pursuant to clause (ii) above, the Owners of all
Certificates then Outstanding shall (x) unanimously direct the Trustee on behalf
of the Lower-Tier REMIC and the Upper-Tier REMIC to adopt a plan of complete
liquidation with respect to each of the Mortgage Loan Groups as contemplated by
Section 860F(a)(4) of the Code and (y) provide to the Trustee an opinion of
counsel experienced in federal income tax matters to the effect that such
liquidation constitutes a Qualified Liquidation, and the Trustee either shall
sell the Mortgage Loans and distribute the proceeds of the liquidation of the
Trust Estate, or shall distribute equitably in kind all of the assets of the
Trust Estate to the remaining Owners of the Certificates based on their
interests in the Trust, and distribute to the Certificate Insurer any amounts
owed under the Insurance Agreement and return the Certificate Insurance Policy
to the Certificate Insurer, each in accordance with such plan, so that the
liquidation or distribution of the Trust Estate, the distribution of any
proceeds of the liquidation and the termination of this Agreement occur no later
than the close of the 90th day after the date of adoption of the plan of
liquidation and such liquidation qualifies as a Qualified Liquidation. In no
event, however, will the Trust created by this Agreement continue beyond the
expiration of twenty-one (21) years from the death of the last survivor of the
descendants of Joseph P. Kennedy, the late Ambassador of the United States to
the United Kingdom, living on the date hereof. The Trustee shall give written
notice of termination of the Agreement to each Owner in the manner set forth in
Section 11.5.

                  SECTION 9.2. CLEAN-UP CALL TERMINATION.

                  (a) On any Remittance Date on or after the Initial Clean-Up
Call Date, either the Master Servicer or any Master Servicer Affiliate (the
Master Servicer or any Master Servicer Affiliate, the "Redeeming Party") may
determine to purchase and may cause the purchase from the Trust of all (but not
fewer than all) Mortgage Loans in the Trust Estate and all property theretofore
acquired in respect of any such Mortgage Loan by foreclosure, deed in lieu of
foreclosure, or otherwise then remaining in the Trust Estate at a price equal to
the sum of (v) the greater of (i) 100% of the aggregate Loan Balances of all of
the Mortgage Loans as of the day of purchase minus the amount actually remitted
by the Master Servicer representing the related Monthly Principal Remittance
Amount on such Remittance Date for the related Remittance Period and (ii) the
fair market value of such Mortgage Loans (disregarding accrued interest), (w) if
the Master Servicer is the Redeeming Party, the amount of any difference between
the related Monthly Interest Remittance Amount actually remitted by the Master
Servicer on such Remittance Date and the related Monthly Interest Remittance
Amount due on such Remittance Date, (x) the related Reimbursement Amount, if
any, and (y) if the Master Servicer is the Redeeming Party, the aggregate amount
of any Delinquency Advances and Servicing Advances remaining unreimbursed,
together with any accrued and unpaid Servicing Fees, as of such Remittance Date
(such amount, the "Termination Price"). In connection with such purchase, the
Redeeming Party shall remit to the Trustee all amounts then on deposit in the
Principal and Interest Account for deposit to the Certificate Account, which
deposit shall be deemed to have occurred immediately preceding such purchase.
Notwithstanding the foregoing, the Redeeming Party may not terminate the Trust
pursuant to this Section 9.2 without the consent of the Certificate Insurer, if
termination would result in a draw on the Certificate Insurance Policy.

                  (b) In connection with any such purchase, the Redeeming Party
shall provide to the Trustee an opinion of counsel experienced in federal income
tax matters to the effect that such purchase constitutes a Qualified Liquidation
of the Lower-Tier REMIC and Upper-Tier REMIC.


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<PAGE>   102


                  (c) Promptly following any such purchase, the Trustee will
release the Files to the Redeeming Party, or otherwise upon their order, in a
manner similar to that described in Section 8.14 hereof.

                  (d) Upon such purchase, the Certificate Insurance Policy will
terminate and shall be returned to the Certificate Insurer.

                  SECTION 9.3. TERMINATION UPON LOSS OF REMIC STATUS.

                  (a) Following a (x) final determination by the Internal
Revenue Service, or by a court of competent jurisdiction, in either case from
which no appeal is taken within the permitted time for such appeal, or (y) if
any appeal is taken, following a final determination of such appeal from which
no further appeal can be taken, to the effect that either the Upper-Tier REMIC
or Lower-Tier REMIC do not and will no longer qualify as a "REMIC" pursuant to
Section 860D of the Code (the "Final Determination") or (z) following the
delivery of an opinion of counsel ("REMIC Opinion") to the effect that the
effect of the Final Determination is to increase substantially the probability
that either the Upper-Tier REMIC or Lower-Tier REMIC will no longer qualify as a
"REMIC" pursuant to Section 860D of the Code, on any Remittance Date on or after
the date which is 30 calendar days following such Final Determination, the
Certificate Insurer, or if Certificate Insurer Default has occurred and is
continuing, the Owners of a majority in Percentage Interest represented by the
Class A Certificates then Outstanding may direct the Trustee to adopt a plan of
complete liquidation with respect to the Trust Estate. In connection with such
liquidation, the Master Servicer shall remit to the Trustee all amounts then on
deposit in the Principal and Interest Account for deposit in the Certificate
Account, which deposit shall be deemed to have occurred immediately preceding
such liquidation.

                  (b) Upon receipt of such direction from the Certificate
Insurer or the Owners of such Class A Certificates, as applicable, the Trustee
shall notify the Master Servicer and holders of the Class R Certificates of such
election to liquidate or such determination to purchase, as the case may be,
(the "Termination Notice"). The Master Servicer or Owner of a majority of the
Percentage Interest of the Class R Certificates then Outstanding acting directly
or through one or more of their affiliates may, on any Remittance Date, within
60 days from the date of receipt of the Termination Notice (the "Purchase Option
Period"), at their option, purchase from the Trust all (but not fewer than all)
Mortgage Loans in the Trust Estate, and all property theretofore acquired by
foreclosure, deed in lieu of foreclosure, or otherwise in respect of any
Mortgage Loan then remaining in the Trust Estate at a purchase price equal to
the Termination Price.

                  (c) If, during the Purchase Option Period, the Master Servicer
or the Owners of the Class R Certificates have not exercised the option
described in the immediately preceding paragraph, then upon the expiration of
the Purchase Option Period in the event that the Owners of the Class A
Certificates have given the Trustee the direction described in clause (a)(i)
above, the Trustee shall (with the prior consent of the Certificate Insurer, so
long as no Certificate Insurer Default has occurred and is continuing) sell the
Mortgage Loans and distribute the proceeds of the liquidation of the Trust
Estate, such that, if so directed, the liquidation of the Trust Estate, the
distribution of the proceeds of such liquidation occur no later than the close
of the 60th day, or such later day as the Owner of a majority of the Percentage
Interest of the Class A Certificates shall permit or direct in writing, after
the expiration of the Purchase Option Period.

                  (d) Following a Final Determination, the Owners of a majority
of the Percentage Interest of the Class R Certificates then Outstanding may, at
their option on any



                                      101
<PAGE>   103


Remittance Date and upon delivery to the Owners of the Class A Certificates and
the Trustee of an opinion of counsel experienced in federal income tax matters
selected by the Owners of a majority of the Percentage Interest of such Class R
Certificates which opinion shall be reasonably satisfactory in form and
substance to a majority of the Percentage Interests represented by the Class A
Certificates then Outstanding and the Trustee, to the effect that the effect of
the Final Determination is to increase substantially the probability that the
gross income of either the Upper-Tier REMIC or Lower-Tier REMIC will be subject
to federal taxation, purchase from the Trust all (but not fewer than all)
Mortgage Loans in the Trust Estate, and all property theretofore acquired by
foreclosure, deed in lieu of foreclosure, or otherwise in respect of any
Mortgage Loan then remaining in the Trust Estate at a purchase price equal to
the Termination Price. In connection with such purchase, the Master Servicer
shall remit to the Trustee all amounts then on deposit in the Principal and
Interest Account for deposit to the Certificate Account, which deposit shall be
deemed to have occurred immediately preceding such purchase. The foregoing
opinion shall be deemed satisfactory unless the Owners of a majority of the
Percentage Interest represented by the Class A Certificates then Outstanding or
the Trustee give the Owners of a majority of the Percentage Interest of the
Class R Certificates notice that such opinion is not satisfactory within thirty
days after receipt of such opinion.

                  SECTION 9.4. DISPOSITION OF PROCEEDS. The Trustee shall, upon
receipt thereof, deposit the proceeds of any liquidation of the Trust Estate
pursuant to this Article IX to the Certificate Account; provided, however, that
any amounts representing Servicing Fees, unreimbursed Delinquency Advances or
unreimbursed Servicing Advances theretofore funded by the Master Servicer from
the Master Servicer's own funds shall be paid by the Trustee to the Master
Servicer.

                  SECTION 9.5. NETTING OF AMOUNTS. If any Person paying the
Termination Price would receive a portion of the amount so paid, such Person may
net any such amount against the Termination Price otherwise payable.


                                   ARTICLE X

                                  THE TRUSTEE

                  SECTION 10.1. CERTAIN DUTIES AND RESPONSIBILITIES.

                  (a) The Trustee (i) undertakes to perform such duties and only
such duties as are specifically set forth in this Agreement, and no implied
covenants or obligations shall be read into this Agreement against the Trustee
and (ii) in the absence of bad faith on its part, may conclusively rely, as to
the truth of the statements and the correctness of the opinions expressed
therein, upon certificates or opinions furnished pursuant to and conforming to
the requirements of this Agreement; but in the case of any such certificates or
opinions which by any provision hereof are specifically required to be furnished
to the Trustee, shall be under a duty to examine the same to determine whether
or not they conform to the requirements of this Agreement.

                  (b) Notwithstanding the appointment of the Master Servicer
hereunder, the Trustee is hereby empowered to perform the duties of the Master
Servicer hereunder whether following the failure of the Master Servicer to
perform, pursuant to Section 8.20 hereof or otherwise. Specifically, and not in
limitation of the foregoing, the Trustee shall have the power:

                  (i) to collect Mortgagor payments;


                                      102
<PAGE>   104


                  (ii) to foreclose on defaulted Mortgage Loans;

                  (iii) to enforce due-on-sale clauses and to enter into
         assumption and substitution agreements as permitted by Section 8.12
         hereof;

                  (iv) to deliver instruments of satisfaction pursuant to
         Section 8.14;

                  (v) to make Delinquency Advances and Servicing Advances and to
         pay Compensating Interest, and

                  (vi) to enforce the Mortgage Loans.

                  (c) No provision of this Agreement shall be construed to
relieve the Trustee from liability for its own negligent action, its own
negligent failure to act or its own willful misconduct, except that:

                  (i) this subsection shall not be construed to limit the effect
         of subsection (a) of this Section;

                  (ii) the Trustee shall not be liable for any error of judgment
         made in good faith by an Authorized Officer, unless it shall be proved
         that the Trustee was negligent in ascertaining the pertinent facts; and

                  (iii) the Trustee shall not be liable with respect to any
         action taken or omitted to be taken by it in good faith in accordance
         with the direction of the Certificate Insurer or of the Owners of a
         majority in Percentage Interest of the Certificates of the affected
         Class or Classes and the Certificate Insurer relating to the time,
         method and place of conducting any proceeding for any remedy available
         to the Trustee, or exercising any trust or power conferred upon the
         Trustee, under this Agreement relating to such Certificates.

                  (d) Whether or not therein expressly so provided, every
provision of this Agreement relating to the conduct or affecting the liability
of or affording protection to the Trustee shall be subject to the provisions of
this Section.

                  (e) No provision of this Agreement shall require the Trustee
to expend or risk its own funds or otherwise incur any financial liability in
the performance of any of its duties hereunder, or in the exercise of any of its
rights or powers, if it shall have reasonable grounds for believing that
repayment of such funds or adequate indemnity against such risk or liability is
not reasonably assured to it.

                  (f) The permissive right of the Trustee to take actions
enumerated in this Agreement shall not be construed as a duty and the Trustee
shall not be answerable for other than its own negligence or willful misconduct.

                  (g) The Trustee shall be under no obligation to institute any
suit, or to take any remedial proceeding under this Agreement, or to take any
steps in the execution of the trusts hereby created or in the enforcement of any
rights and powers hereunder until it shall be indemnified to its satisfaction
against any and all costs and expenses, outlays and counsel fees and other
reasonable disbursements and against all liability, except liability which is
adjudicated to have resulted from its negligence or willful misconduct, in
connection with any action so



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taken. The Trustee shall receive from the Sponsor promptly upon demand therefor,
reimbursement of expenses as are described in the fee quote letter, dated
February 26, 1999 and executed by the Sponsor.

                  SECTION 10.2. REMOVAL OF TRUSTEE FOR CAUSE.

                  (a) The Trustee may be removed pursuant to paragraph (b)
hereof upon the occurrence of any of the following events (whatever the reason
for such event and whether it shall be voluntary or involuntary or be effected
by operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body):

                           (A) the Trustee shall fail to distribute to the
                  Owners entitled thereto on any Payment Date amounts available
                  for distribution in accordance with the terms hereof; or

                           (B) the Trustee shall fail in the performance of, or
                  breach, any covenant or agreement of the Trustee in this
                  Agreement, or if any representation or warranty of the Trustee
                  made in this Agreement or in any certificate or other writing
                  delivered pursuant hereto or in connection herewith shall
                  prove to be incorrect in any material respect as of the time
                  when the same shall have been made, and such failure or breach
                  shall continue or not be cured for a period of 30 days after
                  there shall have been given, by registered or certified mail,
                  to the Trustee by the Sponsor, the Certificate Insurer or by
                  the Owners of at least 25% of the aggregate Percentage
                  Interests represented by the Class A Certificates then
                  Outstanding a written notice specifying such failure or breach
                  and requiring it to be remedied; or

                           (C) a decree or order of a court or agency or
                  supervisory authority having jurisdiction for the appointment
                  of a conservator or receiver or liquidator in any insolvency,
                  readjustment of debt, marshalling of assets and liabilities or
                  similar proceedings, or for the winding-up or liquidation of
                  its affairs, shall have been entered against the Trustee, and
                  such decree or order shall have remained in force undischarged
                  or unstayed for a period of 75 days; or

                           (D) a conservator or receiver or liquidator or
                  sequestrator or custodian of the property of the Trustee is
                  appointed in any insolvency, readjustment of debt, marshalling
                  of assets and liabilities or similar proceedings of or
                  relating to the Trustee or relating to all or substantially
                  all of its property; or

                           (E) the Trustee shall become insolvent (however
                  insolvency is evidenced), generally fail to pay its debts as
                  they come due, file or consent to the filing of a petition to
                  take advantage of any applicable insolvency or reorganization
                  statute, make an assignment for the benefit of its creditors,
                  voluntarily suspend payment of its obligations, or take
                  corporate action for the purpose of any of the foregoing.

                  The Sponsor shall give to the Certificate Insurer and each
Rating Agency notice of the occurrence of any such event of which the Sponsor is
aware.


                                      104
<PAGE>   106


                  (b) If any event described in Paragraph (a) occurs and is
continuing, then and in every such case (i) the Certificate Insurer or (ii) with
the prior written consent (which shall not be unreasonably withheld) of the
Certificate Insurer (x) the Sponsor or (y) the Owners of a majority of the
Percentage Interests represented by the Class A Certificates, or, if there are
no Class A Certificates then Outstanding, by such Percentage Interest
represented by any Class of Class R Certificates then Outstanding may, whether
or not the Trustee resigns pursuant to Section 10.9 hereof, immediately,
concurrently with the giving of notice to the Trustee, and without delaying the
30 days required for notice therein, appoint a successor Trustee pursuant to the
terms of Section 10.9 hereof.

                  SECTION 10.3. CERTAIN RIGHTS OF THE TRUSTEE. Except as
otherwise provided in Section 10.1 hereof:

                  (a) the Trustee may request and rely upon and shall be
protected in acting or refraining from acting upon any resolution, certificate,
statement, instrument, opinion, report, notice, request, direction, consent,
order, bond, note or other paper or document believed by it to be genuine and to
have been signed or presented by the proper party or parties;

                  (b) any request or direction of the Sponsor, the Certificate
Insurer or the Owners of any Class of Certificates mentioned herein shall be
sufficiently evidenced in writing;

                  (c) whenever in the administration of this Agreement the
Trustee shall deem it desirable that a matter be proved or established prior to
taking, suffering or omitting any action hereunder, the Trustee (unless other
evidence be herein specifically prescribed) may, in the absence of bad faith on
its part, rely upon an Officer's Certificate;

                  (d) the Trustee may consult with counsel, and the written
advice of such counsel shall be full and complete authorization and protection
in respect of any action taken, suffered or omitted by it hereunder in good
faith and in reasonable reliance thereon;

                  (e) the Trustee shall be under no obligation to exercise any
of the rights or powers vested in it by this Agreement at the request or
direction of any of the Owners pursuant to this Agreement, unless such Owners
shall have offered to the Trustee reasonable security or indemnity against the
costs, expenses and liabilities which might be incurred by it in compliance with
such request or direction;

                  (f) the Trustee shall not be bound to make any investigation
into the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond,
note or other paper or document, but the Trustee in its discretion may make such
further inquiry or investigation into such facts or matters as it may see fit;

                  (g) the Trustee may execute any of the trusts or powers
hereunder or perform any duties hereunder either directly or by or through
agents or attorneys and the Trustee shall not be responsible for any misconduct
or negligence on the part of any agent or attorney appointed and supervised with
due care by it hereunder; and

                  (h) the Trustee shall not be liable for any action it takes or
omits to take in good faith which it reasonably believes to be authorized by the
Authorized Officer of any Person or within its rights or powers under this
Agreement other than as to validity and sufficiency of its authentication of the
Certificates.


                                      105
<PAGE>   107


                  SECTION 10.4. NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF
CERTIFICATES. The recitals contained herein and in the Certificates, except any
such recitals relating to the Trustee, shall be taken as the statements of the
Sponsor and the Trustee assumes no responsibility for their correctness. The
Trustee makes no representation as to the validity or sufficiency of this
Agreement or of the Certificates other than as to validity and sufficiency of
its authentication of the Certificates.

                  SECTION 10.5. MAY HOLD CERTIFICATES. The Trustee or any agent
of the Trust, in its individual or any other capacity, may become an Owner or
pledgee of Certificates and may otherwise deal with the Trust with the same
rights it would have if it were not Trustee or such agent.

                  SECTION 10.6. MONEY HELD IN TRUST. Money held by the Trustee
in trust hereunder need not be segregated from other trust funds except to the
extent required herein or required by law. The Trustee shall be under no
liability for interest on any money received by it hereunder except as otherwise
agreed with the Sponsor and except to the extent of income or other gain on
investments which are deposits in or certificates of deposit of the Trustee in
its commercial capacity and income or other gain actually received by the
Trustee on Eligible Investments.

                  SECTION 10.7. NO LIEN FOR FEES. The Trustee shall have no lien
on the Trust Estate for the payment of any fees and expenses.

                  SECTION 10.8. CORPORATE TRUSTEE REQUIRED; ELIGIBILITY. There
shall at all times be a Trustee hereunder which shall be a corporation or
association organized and doing business under the laws of the United States of
America or of any State authorized under such laws to exercise corporate trust
powers, having a combined capital and surplus of at least $100,000,000, subject
to supervision or examination by the United States of America or any such State
having a rating or ratings acceptable to the Certificate Insurer or, if the last
sentence of Section 11.18 hereof is applicable, the Sponsor and having (x)
long-term, unsecured debt rated at least A-1 by Moody's (or such lower rating as
may be acceptable to Moody's) and (y) a short-term deposit rating of at least
A-1 from Standard & Poor's (or such lower rating as may be acceptable to
Standard & Poor's). If such Trustee publishes reports of condition at least
annually, pursuant to law or to the requirements of the aforesaid supervising or
examining authority, then for the purposes of this Section, the combined capital
and surplus of such corporation or association shall be deemed to be its
combined capital and surplus as set forth in its most recent report of condition
so published. If at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section, it shall, upon the request of
the Sponsor (with the consent of the Certificate Insurer) (which consent shall
not be unreasonably withheld) or of the Certificate Insurer, resign immediately
in the manner and with the effect hereinafter specified in this Article X.

                  SECTION 10.9. RESIGNATION AND REMOVAL; APPOINTMENT OF
SUCCESSOR.

                  (a) No resignation or removal of the Trustee and no
appointment of a successor trustee pursuant to this Article X shall become
effective until the acceptance of appointment by the successor trustee under
Section 10.10 hereof.

                  (b) The Trustee, or any trustee or trustees hereafter
appointed, may resign at any time by giving written notice of resignation to the
Sponsor and by mailing notice of resignation by first-class Mail, postage
prepaid, to the Certificate Insurer and the Owners at their



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addresses appearing on the Register. A copy of such notice shall be sent by the
resigning Trustee to each Rating Agency. Upon receiving notice of resignation,
the Sponsor shall promptly appoint a successor trustee or trustees by written
instrument, in duplicate, executed on behalf of the Trust by an Authorized
Officer of the Sponsor, one copy of which instrument shall be delivered to the
Trustee so resigning and one copy to the successor trustee or trustees. If no
successor trustee shall have been appointed and have accepted appointment within
30 days after the giving of such notice of resignation, the resigning trustee
may petition any court of competent jurisdiction for the appointment of a
successor trustee, or any Owner may, on behalf of himself and all others
similarly situated, petition any such court for the appointment of a successor
trustee. Such court may thereupon, after such notice, if any, as it may deem
proper and prescribe, appoint a successor trustee.

                  (c) If at any time the Trustee shall cease to be eligible
under Section 10.8 hereof and shall fail to resign after written request
therefor by the Sponsor or by the Certificate Insurer, the Certificate Insurer
or the Sponsor (with the written consent of the Certificate Insurer) may remove
the Trustee and appoint a successor trustee by written instrument, in duplicate,
executed on behalf of the Trust by an Authorized Officer of the Sponsor, one
copy of which instrument shall be delivered to the Trustee so removed and one
copy to the successor trustee.

                  (d) The Owners of a majority of the Percentage Interests
represented by the Class A Certificates, or, if there are no Class A
Certificates then Outstanding, by such majority of the Percentage Interests
represented by Class R Certificates then Outstanding may at any time, with the
prior written consent of the Certificate Insurer, remove the Trustee and appoint
a successor trustee by delivering to the Trustee to be removed, to the successor
trustee so appointed, to the Sponsor and to the Certificate Insurer, copies of
the record of the act taken by the Owners, as provided for in Section 11.3
hereof.

                  (e) If the Trustee fails to perform its duties in accordance
with the terms of this Agreement or becomes ineligible to serve as Trustee, the
Certificate Insurer or, if the last sentence of Section 11.18 hereof is
applicable, the Sponsor may remove the Trustee and appoint a successor trustee
by written instrument, in triplicate, signed by the Certificate Insurer and the
Sponsor duly authorized, one complete set of which instruments shall be
delivered to the Sponsor, one complete set to the Certificate Insurer, one
complete set to the Trustee so removed and one complete set to the successor
Trustee so appointed.

                  (f) If the Trustee shall resign, be removed or become
incapable of acting, or if a vacancy shall occur in the office of the Trustee
for any cause, the Sponsor shall promptly appoint a successor Trustee acceptable
to the Certificate Insurer. If within one year after such resignation, removal
or incapability or the occurrence of such vacancy, a successor Trustee shall be
appointed by act of the Owners of a majority of the Percentage Interests
represented by the Class A Certificates then Outstanding or, if there are no
Class A Certificates then Outstanding, by such majority of the Percentage
Interest of the Class R Certificates delivered to the Sponsor and the retiring
Trustee, the successor Trustee so appointed shall forthwith upon its acceptance
of such appointment become the successor Trustee and supersede the successor
Trustee appointed by the Sponsor. If no successor Trustee shall have been so
appointed by the Sponsor or the Owners and shall have accepted appointment in
the manner hereinafter provided, any Owner may, on behalf of himself and all
others similarly situated, petition any court of competent jurisdiction for the
appointment of a successor Trustee. Such court may thereupon, after such notice,
if any, as it may deem proper and prescribe, appoint a successor Trustee.


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                  (g) The Sponsor shall give notice of any removal of the
Trustee by mailing notice of such event by first-class mail, postage prepaid, to
the Certificate Insurer and to the Owners as their names and addresses appear in
the Register. Each notice shall include the name of the successor Trustee and
the address of its corporate trust office.

                  SECTION 10.10. ACCEPTANCE OF APPOINTMENT BY SUCCESSOR TRUSTEE.
Every successor Trustee appointed hereunder shall execute, acknowledge and
deliver to the Sponsor on behalf of the Trust and to its predecessor Trustee an
instrument accepting such appointment hereunder and stating its eligibility to
serve as Trustee hereunder, and thereupon the resignation or removal of the
predecessor Trustee shall become effective and such successor Trustee, without
any further act, deed or conveyance, shall become vested with all the rights,
powers, trusts, duties and obligations of its predecessor hereunder; but, on
request of the Sponsor or the successor Trustee, such predecessor Trustee shall,
upon payment of its charges then unpaid, execute and deliver an instrument
transferring to such successor Trustee all of the rights, powers and trusts of
the Trustee so ceasing to act, and shall duly assign, transfer and deliver to
such successor Trustee all property and money held by such Trustee so ceasing to
act hereunder. Upon request of any such successor Trustee, the Sponsor on behalf
of the Trust shall execute any and all instruments for more fully and certainly
vesting in and confirming to such successor Trustee all such rights, powers and
trusts.

                  Upon acceptance of appointment by a successor Trustee as
provided in this Section, the Sponsor shall mail notice thereof by first-class
mail, postage prepaid, to the Owners at their last addresses appearing upon the
Register. The Sponsor shall send a copy of such notice to each of the Rating
Agencies and the Certificate Insurer. If the Sponsor fails to mail such notice
within ten days after acceptance of appointment by the successor Trustee, the
successor Trustee shall cause such notice to be mailed at the expense of the
Trust.

                  No successor Trustee shall accept its appointment unless at
the time of such acceptance such successor shall be qualified and eligible under
this Article X.

                  SECTION 10.11. MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION
TO BUSINESS OF THE TRUSTEE. Any corporation or association into which the
Trustee may be merged or converted or with which it may be consolidated, or any
corporation or association resulting from any merger, conversion or
consolidation to which the Trustee shall be a party, or any corporation or
association succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
without the execution or filing of any paper or any further act on the part of
any of the parties hereto; provided, however, that such corporation or
association shall be otherwise qualified and eligible under this Article X. In
case any Certificates have been executed, but not delivered, by the Trustee then
in office, any successor by merger, conversion or consolidation to such Trustee
may adopt such execution and deliver the Certificates so executed with the same
effect as if such successor Trustee had itself executed such Certificates.

                  SECTION 10.12. REPORTING; WITHHOLDING. With respect to each of
the REMIC Trusts and the Non-REMIC Estate, the Trustee shall timely provide to
the Owners (or other Persons entitled thereto) the Internal Revenue Service's
Form 1099 and any other statement required by applicable Treasury regulations or
analogous provisions of state or local law as determined by the Sponsor, and
shall withhold, as required by applicable law, federal, state or local taxes, if
any, applicable to distributions to the Owners, including, but not limited to,
backup withholding under Section 3406 of the Code, the withholding tax on
distributions to foreign investors under Sections 1441 and 1442 of the Code and
beginning after December 31, 2000,



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shall report as effectively connected income distributions with respect to
Supplemental Interest Rights held by foreign holders if such holders have not
provided certification that such distributions are not effectively connected
income.

                  SECTION 10.13. LIABILITY OF THE TRUSTEE. The Trustee shall be
liable in accordance herewith only to the extent of the obligations specifically
imposed upon and undertaken by the Trustee herein. Neither the Trustee nor any
of the directors, officers, employees or agents of the Trustee shall be under
any liability on any Certificate or otherwise to any Account, the Sponsor, the
Master Servicer or any Owner for any action taken or for refraining from the
taking of any action in good faith pursuant to this Agreement, or for errors in
judgment; provided, however, that this provision shall not protect the Trustee
or any such Person against any liability which would otherwise be imposed by
reason of negligent action, negligent failure to act or bad faith in the
performance of duties or by reason of reckless disregard of obligations and
duties hereunder. Subject to the foregoing sentence, the Trustee shall not be
liable for losses on investments of amounts in any Account (except for any
losses on obligations on which the bank serving as Trustee is the obligor and is
otherwise liable). In addition, the Sponsor and Master Servicer covenant and
agree to indemnify the Trustee, and its officers, directors, employees and
agents, including, without limitation, when the Trustee is acting as Master
Servicer, and hold it harmless against, any and all losses, liabilities,
damages, claims or expenses (including legal fees and expenses) other than those
resulting from the negligence or bad faith of the Trustee. The indemnification
provided in this Section 10.13 shall survive the termination of this Agreement
or the resignation or removal of the Trustee hereunder. The Trustee and any
director, officer, employee or agent of the Trustee may rely and shall be
protected in acting or refraining from acting in good faith on any certificate,
notice or other document of any kind prima facie properly executed and submitted
by the Authorized Officer of any Person respecting any matters arising
hereunder.

                  SECTION 10.14. APPOINTMENT OF CO-TRUSTEE OR SEPARATE TRUSTEE.
Notwithstanding any other provisions of this Agreement, at any time, for the
purpose of meeting any legal requirements of any jurisdiction in which any part
of the Trust Estate or Property may at the time be located, the Master Servicer
and the Trustee acting jointly shall have the power and shall execute and
deliver all instruments to appoint one or more Persons approved by the Trustee
and the Certificate Insurer to act as co-Trustee or co-Trustees, jointly with
the Trustee, of all or any part of the Trust Estate or separate Trustee or
separate Trustees of any part of the Trust Estate, and to vest in such Person or
Persons, in such capacity and for the benefit of the Owners, such title to the
Trust Estate, or any part thereof, and, subject to the other provisions of this
Section 10.14, such powers, duties, obligations, rights and trusts as the Master
Servicer and the Trustee may consider necessary or desirable. If the Master
Servicer shall not have joined in such appointment within 15 days after the
receipt by it of a request so to do, or in the case any event indicated in
Sections 8.20(a) or 8.20(b) shall have occurred and be continuing, the Trustee
alone shall have the power to make such appointment with the consent of the
Certificate Insurer. No co-Trustee or separate Trustee hereunder shall be
required to meet the terms of eligibility as a successor Trustee under Section
10.8 and no notice to Owner of the appointment of any co-Trustee or separate
Trustee shall be required under Section 10.8.

                  Every separate Trustee and co-Trustee shall, to the extent
permitted, be appointed and act subject to the following provisions and
conditions:

                  (i) All rights, powers, duties and obligations conferred or
         imposed upon the Trustee shall be conferred or imposed upon and
         exercised or performed by the Trustee and such separate Trustee or
         co-Trustee jointly (it being understood that such separate



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<PAGE>   111


         Trustee or co-Trustee is not authorized to act separately without the
         Trustee joining in such act), except to the extent that under any law
         of any jurisdiction in which any particular act or acts are to be
         performed (whether as Trustee hereunder or as successor to the Master
         Servicer hereunder), the Trustee shall be incompetent or unqualified to
         perform such act or acts, in which event such rights, powers, duties
         and obligations (including the holding of title to the Trust Estate or
         any portion thereof in any such jurisdiction) shall be exercised and
         performed singly by such separate Trustee or co-Trustee, but solely at
         the direction of the Trustee;

                  (ii) No co-Trustee hereunder shall be held personally liable
         by reason of any act or omission of any other co-Trustee hereunder; and

                  (iii) The Master Servicer and the Trustee acting jointly may
         at any time accept the resignation of or remove any separate Trustee or
         co-Trustee.

                  Any notice, request or other writing given to the Trustee
shall be deemed to have been given to each of the then separate Trustees and
co-Trustees, as effectively as if given to each of them. Every instrument
appointing any separate Trustee or co-Trustee shall refer to this Agreement and
the conditions of this Section 10.14. Each separate Trustee and co-Trustee, upon
its acceptance of the trusts conferred, shall be vested with the estates or
property specified in its instrument of appointment, either jointly with the
Trustee or separately, as may be provided therein, subject to all the provisions
of this Agreement, specifically including every provision of this Agreement
relating to the conduct of, affecting the liability of, or affording protection
to, the Trustee. Every such instrument shall be filed with the Trustee and a
copy thereof given to the Master Servicer.

                  Any separate Trustee or co-Trustee may, at any time,
constitute the Trustee, its agent or attorney-in-fact, with full power and
authority, to the extent not prohibited by law, to do any lawful act under or in
respect of this Agreement on its behalf and in its name. If any separate Trustee
or co-Trustee shall die, become incapable of acting, resign or be removed, all
of its estates, properties, rights, remedies and trusts shall vest in and be
exercised by the Trustee, to the extent permitted by law, without the
appointment of a new or successor Trustee.

                  The Trustee shall give to the Rating Agencies, the Sponsor and
the Certificate Insurer notice of the appointment of any Co-Trustee or separate
Trustee.


                                   ARTICLE XI

                                  MISCELLANEOUS

                  SECTION 11.1. COMPLIANCE CERTIFICATES AND OPINIONS. Upon any
application or request by the Sponsor, the Certificate Insurer or the Owners to
the Trustee to take any action under any provision of this Agreement, the
Sponsor, the Certificate Insurer or the Owners, as the case may be, shall
furnish to the Trustee a certificate stating that all conditions precedent, if
applicable, provided for in this Agreement relating to the proposed action have
been complied with, except that in the case of any such application or request
as to which the furnishing of any documents is specifically required by any
provision of this Agreement relating to such particular application or request,
no additional certificate need be furnished.



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                  SECTION 11.2. FORM OF DOCUMENTS DELIVERED TO THE TRUSTEE. In
any case where several matters are required to be certified by, or covered by an
opinion of, any specified Person, it is not necessary that all such matters be
certified by, or covered by the opinion of, only one such Person, or only one
document, but one such Person may certify or give an opinion with respect to
some matters and one or more other such Persons as to other matters, and any
such Person may certify or give an opinion as to such matters in one or several
documents.

                  Any certificate of an Authorized Officer of the Trustee may be
based, insofar as it relates to legal matters, upon an opinion of counsel,
unless such Authorized Officer knows, or in the exercise of reasonable care
should know, that the opinion is erroneous. Any such certificate of an
Authorized Officer of the Trustee or any opinion of counsel may be based,
insofar as it relates to factual matter upon a certificate or opinion of, or
representations by, one or more Authorized Officers of the Sponsor or of the
Master Servicer, stating that the information with respect to such factual
matters is in the possession of the Sponsor or of the Master Servicer, unless
such Authorized Officer or counsel knows, or in the exercise of reasonable care
should know, that the certificate or opinion or representations with respect to
such matters are erroneous. Any opinion of counsel may also be based, insofar as
it relates to factual matters, upon a certificate or opinion of, or
representations by, an Authorized Officer of the Trustee, stating that the
information with respect to such matters is in the possession of the Trustee,
unless such counsel knows, or in the exercise of reasonable care should know,
that the certificate or opinion or representations with respect to such matters
are erroneous. Any opinion of counsel may be based on the written opinion of
other counsel, in which event such opinion of counsel shall be accompanied by a
copy of such other counsel's opinion and shall include a statement to the effect
that such counsel believes that such counsel and the Trustee may reasonably rely
upon the opinion of such other counsel.

                  Where any Person is required to make, give or execute two or
more applications, requests, consents, certificates, statements, opinions or
other instruments under this Agreement, they may, but need not, be consolidated
and form one instrument.

                  SECTION 11.3. ACTS OF OWNERS.

                  (a) Any request, demand, authorization, direction, notice,
consent, waiver or other action provided by this Agreement to be given or taken
by the Owners may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Owners in person or by an agent duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered
to the Trustee, and, where it is hereby expressly required, to the Sponsor
and/or the Certificate Insurer. Such instrument or instruments (and the action
embodied therein and evidenced thereby) are herein sometimes referred to as the
"act" of the Owners signing such instrument or instruments. Proof of execution
of any such instrument or of a writing appointing any such agent shall be
sufficient for any purpose of this Agreement and conclusive in favor of the
Trustee and the Trust, if made in the manner provided in this Section.

                  (b) The fact and date of the execution by any Person of any
such instrument or writing may be proved by the affidavit of a witness of such
execution or by the certificate of any notary public or other officer authorized
by law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof. Whenever
such execution is by an officer of a corporation or a member of a partnership on
behalf of such corporation or partnership, such certificate or affidavit shall
also constitute sufficient proof of his authority.



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                  (c) The ownership of Certificates shall be proved by the
Register.

                  (d) Any request, demand, authorization, direction, notice,
consent, waiver or other action by the Owner of any Certificate shall bind the
Owner of every Certificate issued upon the registration of transfer thereof or
in exchange therefor or in lieu thereof, in respect of anything done, omitted or
suffered to be done by the Trustee or the Trust in reliance thereon, whether or
not notation of such action is made upon such Certificates.

                  SECTION 11.4. NOTICES, ETC., TO TRUSTEE. Any request, demand,
authorization, direction, notice, consent, waiver or act of the Owners or other
documents provided or permitted by this Agreement to be made upon, given or
furnished to, or filed with the Trustee by any Owner, the Certificate Insurer or
by the Sponsor shall be sufficient for every purpose hereunder if made, given,
furnished or filed in writing to and received by the Trustee at its corporate
trust office as set forth in Section 2.2 hereof.

                  SECTION 11.5. NOTICES AND REPORTS TO OWNERS; WAIVER OF
NOTICES. Where this Agreement provides for notice to Owners of any event or the
mailing of any report to Owners, such notice or report shall be sufficiently
given (unless otherwise herein expressly provided) if mailed, first-class
postage prepaid, to each Owner affected by such event or to whom such report is
required to be mailed, at the address of such Owner as it appears on the
Register, not later than the latest date, and not earlier than the earliest
date, prescribed for the giving of such notice or the mailing of such report. In
any case where a notice or report to Owners is mailed in the manner provided
above, neither the failure to mail such notice or report nor any defect in any
notice or report so mailed to any particular Owner shall affect the sufficiency
of such notice or report with respect to other Owners, and any notice or report
which is mailed in the manner herein provided shall be conclusively presumed to
have been duly given or provided.

                  Where this Agreement provides for notice in any manner, such
notice may be waived in writing by any Person entitled to receive such notice,
either before or after the event, and such waiver shall be the equivalent of
such notice. Waivers of notice by Owners shall be filed with the Trustee, but
such filing shall not be a condition precedent to the validity of any action
taken in reliance upon such waiver.

                  In case, by reason of the suspension of regular mail service
as a result of a strike, work stoppage or similar activity, it shall be
impractical to mail notice of any event to Owners when such notice is required
to be given pursuant to any provision of this Agreement, then any manner of
giving such notice as shall be satisfactory to the Trustee shall be deemed to be
a sufficient giving of such notice.

                  Where this Agreement provides for notice to any rating agency
that rated any Certificates, failure to give such notice shall not affect any
other rights or obligations created hereunder.

                  SECTION 11.6. RULES BY TRUSTEE AND SPONSOR. The Trustee may
make reasonable rules for any meeting of Owners. The Sponsor may make reasonable
rules and set reasonable requirements for its functions.

                  SECTION 11.7. SUCCESSORS AND ASSIGNS. All covenants and
agreements in this Agreement by any party hereto shall bind its successors and
assigns, whether so expressed or not.


                                      112
<PAGE>   114


                  SECTION 11.8. SEVERABILITY. In case any provision in this
Agreement or in the Certificates shall be invalid, illegal or unenforceable, the
validity, legality and enforceability of the remaining provisions shall not in
any way be affected or impaired thereby.

                  SECTION 11.9. BENEFITS OF AGREEMENT. Nothing in this Agreement
or in the Certificates, expressed or implied, shall give to any Person, other
than the Owners, the Certificate Insurer and the parties hereto and their
successors hereunder, any benefit or any legal or equitable right, remedy or
claim under this Agreement.

                  SECTION 11.10. LEGAL HOLIDAYS. In any case where the date of
any Payment Date, any other date on which any distribution to any Owner is
proposed to be paid, or any date on which a notice is required to be sent to any
Person pursuant to the terms of this Agreement shall not be a Business Day, then
(notwithstanding any other provision of the Certificates or this Agreement)
payment or mailing need not be made on such date, but may be made on the next
succeeding Business Day with the same force and effect as if made or mailed on
the nominal date of any such Payment Date, or such other date for the payment of
any distribution to any Owner or the mailing of such notice, as the case may be,
and no interest on such payment shall accrue for the period from and after any
such nominal date, provided such payment is made in full on such next succeeding
Business Day.

                  SECTION 11.11. GOVERNING LAW. In view of the fact that Owners
are expected to reside in many states and outside the United States and the
desire to establish with certainty that this Agreement will be governed by and
construed and interpreted in accordance with the law of a state having a
well-developed body of commercial and financial law relevant to transactions of
the type contemplated herein, this Agreement and each Certificate shall be
construed in accordance with and governed by the laws of the State of New York
applicable to agreements made and to be performed therein.

                  SECTION 11.12. COUNTERPARTS. This instrument may be executed
in any number of counterparts, each of which so executed shall be deemed to be
an original, but all such counterparts shall together constitute but one and the
same instrument.

                  SECTION 11.13. USURY. The amount of interest payable or paid
on any Certificate under the terms of this Agreement shall be limited to an
amount which shall not exceed the maximum nonusurious rate of interest allowed
by the applicable laws of the State of New York or any applicable law of the
United States permitting a higher maximum nonusurious rate that preempts such
applicable New York laws, which could lawfully be contracted for, charged or
received (the "Highest Lawful Rate"). In the event any payment of interest on
any Certificate exceeds the Highest Lawful Rate, the Trust stipulates that such
excess amount will be deemed to have been paid to the Owner of such Certificate
as a result of an error on the part of the Trustee acting on behalf of the Trust
and the Owner receiving such excess payment shall promptly, upon discovery of
such error or upon notice thereof from the Trustee on behalf of the Trust,
refund the amount of such excess or, at the option of such Owner, apply the
excess to the payment of principal of such Certificate, if any, remaining
unpaid. In addition, all sums paid or agreed to be paid to the Trustee for the
benefit of Owners of Certificates for the use, forbearance or detention of money
shall, to the extent permitted by applicable law, be amortized, prorated,
allocated and spread throughout the full term of such Certificates.



                                      113
<PAGE>   115


                  SECTION 11.14. AMENDMENT.

                  (a) The Trustee, the Sponsor and the Master Servicer, may at
any time and from time to time, with the prior written consent of the
Certificate Insurer but without the giving of notice to or the receipt of the
consent of the Owners, amend this Agreement, and the Trustee shall consent to
such amendment, for the purpose of (i) curing any ambiguity, or correcting or
supplementing any provision hereof which may be inconsistent with any other
provision hereof or of the Transaction Documents, or to add provisions hereto
which are not inconsistent with the provisions hereof, (ii) upon receipt of an
opinion of counsel experienced in federal income tax matters to the effect that
no entity-level tax will be imposed on the Upper-Tier REMIC or the Lower-Tier
REMIC or upon the transferor of a Class R or Class RL Certificate as a result of
the ownership of any Class R or Class RL Certificate by a Disqualified
Organization, removing the restriction on transfer set forth in Section 5.8(b)
hereof or (iii) complying with the requirements of the Code and the regulations
proposed or promulgated thereunder; provided, however, that any such action
shall not, as evidenced by an opinion of counsel delivered to the Trustee,
materially and adversely affect the interests of any Owner (without its written
consent).

                  (b) The Trustee, the Sponsor and the Master Servicer may, at
any time and from time to time, with the prior written consent of the
Certificate Insurer but without the giving of notice to or the receipt of the
consent of the Owners, amend this Agreement, and the Trustee shall consent to
such amendment, for the purpose of changing the definitions of "Group I
Specified Overcollateralization Amount," and "Group II Specified
Overcollateralization Amount"; provided, however, that no such change shall
affect the weighted average life of the related Class of Class A Certificates
(assuming an appropriate prepayment speed as determined by the Representative)
by more than five percent, as determined by the Representative.

                  (c) This Agreement may also be amended by the Trustee, the
Sponsor, and the Master Servicer at any time and from time to time, with the
prior written approval of the Certificate Insurer and not less than a majority
of the Percentage Interest represented by each affected Class of Certificates
then Outstanding, for the purpose of adding any provisions or changing in any
manner or eliminating any of the provisions of this Agreement or of modifying in
any manner the rights of the Owners hereunder; provided, however, that no such
amendment shall (a) change in any manner the amount of, or change the timing of,
payments which are required to be distributed to any Owner without the consent
of the Owner of such Certificate, (b) change or reduce the aforesaid percentages
of Percentage Interests which are required to consent to any such amendments or
(c) result in a down-rating or withdrawal of any ratings then assigned to the
Class A Certificates, without the consent of the Owners of all Certificates of
the Class or Classes affected then Outstanding.

                  (d) Each proposed amendment to this Agreement shall be
accompanied by an opinion of counsel nationally recognized in federal income tax
matters addressed to the Trustee and to the Certificate Insurer to the effect
that such amendment would not adversely affect the status of either the
Upper-Tier REMIC or Lower-Tier REMIC as a REMIC. Neither such opinion of counsel
nor any expense of any such proposed amendment shall be at the Trustee's
expense.

                  (e) The Certificate Insurer, the Owners and each Rating Agency
shall be provided with copies of any amendments to this Agreement, together with
copies of any opinions or other documents or instruments executed in connection
therewith.



                                      114
<PAGE>   116


                  SECTION 11.15. REMIC STATUS; TAXES.

                  (a) The Tax Matters Person shall prepare and file or cause to
be filed with the Internal Revenue Service federal tax or information returns
with respect to the Upper-Tier REMIC and Lower-Tier REMIC and the Certificates
containing such information and at the times and in such manner as may be
required by the Code or applicable Treasury regulations, and shall furnish to
Owners such statements or information at the times and in such manner as may be
required thereby. For this purpose, the Tax Matters Person may, but need not,
rely on any proposed regulations of the United States Department of the
Treasury. The Tax Matters Person shall indicate the election to treat each of
the Upper-Tier REMIC and Lower-Tier REMIC as a REMIC (which election shall apply
to the taxable period ending December 31, 1999 and each calendar year
thereafter) in such manner as the Code or applicable Treasury regulations may
prescribe. The Trustee, as Tax Matters Person appointed pursuant to Section
11.17 hereof shall sign all tax information returns filed pursuant to this
Section 11.15. The Tax Matters Person shall provide information necessary for
the computation of tax imposed on the transfer of a Class R or Class RL
Certificate to a Disqualified Organization, or an agent of a Disqualified
Organization, or a pass-through entity in which a Disqualified Organization is
the record holder of an interest. The Tax Matters Person shall provide the
Trustee with copies of any Federal tax or information returns filed, or caused
to be filed, by the Tax Matters Person with respect to the REMIC Trust or the
Certificates.

                  (b) The Tax Matters Person shall timely file all reports
required to be filed by the Trust with any federal, state or local governmental
authority having jurisdiction over the Trust, including other reports that must
be filed with the Owners, such as the Internal Revenue Service's Form 1066 and
Schedule Q and the form required under Section 6050K of the Code, if applicable
to REMICs. The Trustee shall be liable to the Master Servicer and the Sponsor
for any penalties or interest as a result of its negligence with respect to such
filings. Furthermore, the Tax Matters Person shall report to Owners, if
required, with respect to the allocation of expenses pursuant to Section 212 of
the Code in accordance with the specific instructions to the Tax Matters Person
by the Sponsor with respect to such allocation of expenses. The Tax Matters
Person shall collect any forms or reports from the Owners determined by the
Sponsor to be required under applicable federal, state and local tax laws. The
Trustee shall provide copies of all filings to the Master Servicer within 15
days of the required date of such filing. In addition, the Trustee agrees not to
file more than one extension per required filing without prior consultation
with, and the consent of, the Master Servicer. Further, the Trustee shall
provide to the Sponsor and the Master Servicer access to any documentation
regarding its tax reporting duties hereunder as well as providing access to the
Trustee's officers and personnel in order to discuss the methodology and
preparation of any filings or returns hereunder. Such access shall be provided
to the Master Servicer and the Sponsor without cost or charge.

                  (c) The Tax Matters Person shall provide to the Internal
Revenue Service and to persons described in Section 860E(e)(3) and (6) of the
Code the information described in Treasury Regulation Section
1.860D-1(b)(5)(ii), or any successor regulation thereto. Such information will
be provided in the manner described in Treasury Regulation Section
1.860E-2(a)(5), or any successor regulation thereto.

                  (d) The Sponsor covenants and agrees that within ten Business
Days after receiving a written request from the Trustee it shall provide to the
Trustee any information necessary to enable the Trustee to meet its obligations
under subsections (b) and (c) above.


                                      115
<PAGE>   117


                  (e) The Trustee, the Sponsor and the Master Servicer each
covenants and agrees for the benefit of the Owners (i) to take no action which
would result in the termination of "REMIC" status for the Upper-Tier REMIC and
Lower-Tier REMIC, (ii) not to engage in any "prohibited transaction", as such
term is defined in Section 860F(a)(2) of the Code and (iii) not to engage in any
other action which may result in the imposition on the Upper-Tier REMIC and
Lower-Tier REMIC of any other taxes under the Code.

                  (f) The Upper-Tier REMIC and Lower-Tier REMIC shall, for
federal income tax purposes, maintain books on a calendar year basis and report
income on an accrual basis.

                  (g) Except as otherwise permitted by Section 7.6(b), no
Eligible Investment shall be sold prior to its stated maturity (unless sold
pursuant to a plan of liquidation in accordance with Article IX hereof).

                  (h) Neither the Sponsor nor the Trustee shall enter into any
arrangement by which the Trustee will receive a fee or other compensation for
services rendered pursuant to this Agreement, which fee or other compensation is
paid from the Trust Estate, other than as expressly contemplated by this
Agreement.

                  (i) Notwithstanding the foregoing clauses (g) and (h), the
Trustee or the Sponsor may engage in any of the transactions prohibited by such
clauses, provided that the Trustee shall have received the prior written consent
of the Certificate Insurer and an opinion of counsel experienced in federal
income tax matters to the effect that such transaction does not result in a tax
imposed on the Trustee or cause a termination of REMIC status for either the
Upper-Tier REMIC or Lower-Tier REMIC; provided, however, that such transaction
is otherwise permitted under this Agreement.

                  SECTION 11.16. ADDITIONAL LIMITATION ON ACTION AND IMPOSITION
OF TAX.

                  (a) Any provision of this Agreement to the contrary
notwithstanding, the Trustee shall not, without having obtained, and delivered
to the Certificate Insurer, an opinion of counsel experienced in federal income
tax matters (which opinion shall be at the expense of the Sponsor) to the effect
that such transaction does not result in a tax imposed on the Trust or cause a
termination of REMIC status for either the Upper-Tier REMIC or Lower-Tier REMIC,
(i) sell any assets in the Trust Estate, (ii) accept any contribution of assets
after the Startup Day or (iii) agree to any modification of this Agreement.

                  (b) In the event that any tax is imposed on "prohibited
transactions" of either the Upper-Tier REMIC or Lower-Tier REMIC as defined in
Section 860F(a)(2) of the Code, on the "net income from foreclosure property" as
defined in Section 860G(c) of the Code, on any contribution to either the
Upper-Tier REMIC or Lower-Tier REMIC after the Startup Day pursuant to Section
860G(d) of the Code, or any other tax, including liability for withholding tax,
(other than any minimum tax imposed by Sections 23151(a) or 23153(a) of the
California Revenue and Taxation Code) is imposed on the REMIC Trust or the
Non-REMIC Estate, such tax shall be paid by (i) the Trustee, if such tax arises
out of or results from a breach by the Trustee of any of its obligations under
this Agreement, (ii) the Master Servicer, if such tax arises out of or results
from a breach by the Master Servicer of any of its obligations under this
Agreement, or otherwise (iii) the Owners of the Class R and Class RL
Certificates in proportion to their Percentage Interests. To the extent such tax
is chargeable against the Owners of the Class R and Class RL Certificates,
notwithstanding anything to the contrary contained herein, the Trustee is



                                      116
<PAGE>   118


hereby authorized to retain from amounts otherwise distributable to the Owners
of the Class R and Class RL Certificates on any Payment Date sufficient funds to
reimburse the Trustee for the payment of such tax (to the extent that the
Trustee has not been previously reimbursed or indemnified therefor).

                  (c) The Trustee shall pay out of its own funds, without any
right of reimbursement, any and all expenses relating to any tax audit of the
Trust Estate (including, but not limited to, any professional fees or any
administrative or judicial proceedings with respect thereto that involves the
Internal Revenue Service or state tax authorities); provided, however, that if
such audit resulted solely from the negligence of the Master Servicer or the
Sponsor, as the case may be, the Master Servicer or Sponsor shall pay such
expenses. The Trustee shall act on behalf of the Trust Estate in any
administrative or judicial proceeding relating to an examination or audit by any
governmental taxing authority with respect thereto.

                  (d) On or before April 15 of each calendar year, commencing
April 15, 2000, the Trustee shall deliver to the Master Servicer a Certificate
from a Responsible Officer of the Trustee stating the Trustee's compliance with
its tax reporting duties set forth in this Agreement.

                  (e) The Trustee agrees to indemnify the Trust Estate, the
Master Servicer and the Sponsor for any taxes and costs, including, without
limitation, any penalties, interest, professional fees and attorneys' fees
imposed on or incurred by the Trust Estate, the Master Servicer or the Sponsor,
as a result of a breach of the Trustee's covenants set forth in this Agreement
or as a result of the Trustee's negligence, willful misconduct or bad faith.

                  SECTION 11.17. APPOINTMENT OF TAX MATTERS PERSON. The Owner of
the Class R Certificate shall act as the Tax Matters Person for the Upper-Tier
REMIC and the Owner of the Class RL Certificate shall act as the Tax Matters
Person for the Lower-Tier REMIC. The Owners of the Class R and Class RL
Certificates hereby appoint the Trustee as their agent for all purposes of the
Code to perform, or cause to be performed, such duties and take, or cause to be
taken, such actions as are required to be performed or taken by the Tax Matters
Person for each REMIC under the Code.

                  SECTION 11.18. THE CERTIFICATE INSURER. The Certificate
Insurer is a third-party beneficiary of this Agreement. Any right conferred to
the Certificate Insurer shall be suspended during any period in which the
Certificate Insurer is in default in its payment obligations under the
Certificate Insurance Policy, except with respect to amendments to this
Agreement pursuant to Section 11.14. During the continuance of a Certificate
Insurer Default, the Certificate Insurer's rights hereunder shall vest in the
Trustee on behalf of the Owners of the Class A Certificates and shall be
exercisable by the Owners of at least a majority in Percentage Interest of the
Class A Certificates then Outstanding. At such time as the Class A Certificates
are no longer Outstanding hereunder and the Certificate Insurer has been
reimbursed for all Reimbursement Amounts to which it is entitled hereunder and
the Certificate Insurance Policy has expired, the Certificate Insurer's rights
hereunder shall terminate.

                  SECTION 11.19. MAINTENANCE OF RECORDS. Each Originator and
Owner of a Class R Certificate shall each continuously keep an original executed
counterpart of this Agreement in its official records.

                  SECTION 11.20. NOTICES. All notices hereunder shall be given
as follows, until any superseding instructions are given to all other Persons
listed below:


                                      117
<PAGE>   119


The Trustee:             Bankers Trust Company
                            of California, N.A.
                         3 Park Plaza, 16th Floor
                         Irvine, CA 92614
                         Attention:  Advanta 1999-2/AM9902
                         Tel:  (949) 253-7575
                         Fax:  (949) 253-7577


The Sponsor:             Advanta Mortgage Conduit Services Inc.
                         10790 Rancho Bernardo Road
                         San Diego, California 92127
                         Tel:  (858) 674-3317
                         Attention:  Structured Finance


The Master Servicer:     Advanta Mortgage Corp. USA
                         10790 Rancho Bernardo Road
                         San Diego, California 92127
                         Tel:  (858) 674-3317
                         Fax:  (858) 674-3592

The Certificate Insurer: Ambac Assurance Corporation
                         One State Street Plaza
                         New York, New York  10004
                         Attention:  Advanta Mortgage Loan Trust 1999-2,
                                     Structured Finance Department - MBS
                         Fax:  (212) 363-1459

Moody's:                 Moody's Investors Service
                         99 Church Street
                         New York, New York 10007
                         Attention: The Mortgage Monitoring Department


Standard & Poor's:       Standard & Poor's Ratings Group
                         26 Broadway, 15th Floor
                         New York, New York 10004
                         Attention: Manager, Structured Finance Operations Group


Underwriters:            Morgan Stanley & Co. Incorporated, as Representative
                         1585 Broadway
                         New York, New York  10036
                         Attention:  General Counsel







                                      118
<PAGE>   120



                  IN WITNESS WHEREOF, the Sponsor, the Master Servicer and the
Trustee have caused this Agreement to be duly executed by their respective
officers thereunto duly authorized, all as of the day and year first above
written.


                                              ADVANTA MORTGAGE CONDUIT SERVICES,
                                                INC.
                                                as Sponsor


                                                By: /s/ Michael Coco
                                                    ----------------------------
                                                Name: Michael Coco
                                                Title: Vice President


                                              ADVANTA MORTGAGE CORP. USA
                                                as Master Servicer


                                                By: /s/ Michael Coco
                                                    ----------------------------
                                                Name: Michael Coco
                                                Title: Vice President


                                              BANKERS TRUST COMPANY OF
                                                CALIFORNIA, N.A.,
                                                as Trustee


                                                By:/s/ Mark McNeill
                                                    ----------------------------
                                                    Mark McNeill
                                                    Assistant Secretary







                        [POOLING AND SERVICING AGREEMENT]




                                      119
<PAGE>   121


STATE OF CALIFORNIA        )
                           :   ss.:
COUNTY OF Orange           )


                  On the 1st day of June 1999, before me personally came Mark
McNeill to me known, who, being by me duly sworn did depose and say that his/her
office is located at Three Park Plaza, Irvine, California 92614; that s/he is
Asst. Secretary of Bankers Trust Company of California, N.A., the national
banking corporation described in and that executed the above instrument as
Trustee; and that s/he signed his/her name thereto under authority granted by
the Board of Directors of said national banking association.

                  IN WITNESS WHEREOF, I have hereunto set my hand and affixed my
official seal the day and year in this certificate first above written.



[NOTARIAL SEAL]

Lillian Fakhr
- ----------------------------------
                     Notary Public







                                      120
<PAGE>   122


                                                                      SCHEDULE 1
                                                     Schedules of Mortgage Loans

On file with Trustee.




<PAGE>   123


                                                                     EXHIBIT A-1
                                                  FORM OF CLASS A-1 CERTIFICATES

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                             CLASS A-1 CERTIFICATES
                   (Class A-1 Group I Fixed Rate Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                           Mortgage Loans in Group I.
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  Unless this certificate is presented by an authorized
representative of the Depository Trust Company, a New York corporation ("DTC"),
to Issuer or its agent for registration of transfer, exchange, or payment, and
any certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group I described herein,
monies in certain Accounts created pursuant to the Pooling and Servicing
Agreement and certain other rights relating thereto and is payable only from
amounts received by the Trustee relating to the Mortgage Loans in Group I held
by the Trust and (ii) monies held in such Accounts.)

No.:     A-1-1                 June 3, 1999                       00755WGN0
    ------------             ----------------                   -------------
                               Date                               CUSIP

$114,000,000                                       March 25, 2013
- ------------                                       --------------
Original Principal Amount                          Final Scheduled
                                                   Payment Date

                                   CEDE & CO.
                                ----------------
                                Registered Owner





                                     A-1-1
<PAGE>   124


                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of fixed rate mortgage loans (the
"Mortgage Loans") assigned to a particular mortgage loan group ("Group I") which
will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or the
"Sponsor"), a Delaware corporation and sold or caused to be sold by the Sponsor
to Bankers Trust Company of California, N.A., a national banking association, as
trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust 1999-2 (the
"Trust") pursuant to that certain Pooling and Servicing Agreement dated as of
May 1, 1999 (the "Pooling and Servicing Agreement") by and among the Sponsor,
the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the "Master
Servicer"), (ii) such amounts in all Accounts including principal collected and
accrued interest in respect of the related Mortgage Loans on or after the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, including Eligible Investments, as may from time to time may be held in
such Accounts (except any premium recapture and interest accrued prior to the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, as applicable and except for net investment earnings on the Principal and
Interest Account, the Capitalized Interest Account and on the Certificate
Account), (iii) any Property relating to the Mortgage Loans in Group I, the
ownership of which has been effected on behalf of the Trust as a result of
foreclosure or acceptance by the Master Servicer of a deed in lieu of
foreclosure and that has not been withdrawn from the Trust, (iv) any Mortgage
Insurance Policies relating to the Mortgage Loans in Group I and any rights of
the Sponsor under any Mortgage Insurance Policies, (v) Net Liquidation Proceeds
relating to the Mortgage Loans in Group I, (vi) the rights of the Trustee under
the Certificate Insurance Policy, and (vii) the rights of the Sponsor against
any Originator pursuant to the related Master Transfer Agreement. Such Mortgage
Loans in Group I and other amounts and property enumerated above are hereinafter
referred to as "Group I."

                  The Original Principal Amount set forth above is equal to the
product of (i) the Percentage Interest represented by this Certificate and (ii)
the aggregate original principal amount of the Class A-1 Certificates on June 3,
1999 (the "Startup Day"), which aggregate amount was $114,000,000. The Owner
hereof is entitled to principal payments on each Payment Date, as hereinafter
described, which will fully amortize such Original Principal Amount over the
period from the date of initial delivery hereof to the final Payment Date of the
Class A-1 Certificates. Therefore, the actual outstanding principal amount of
this Certificate, on any date subsequent to June 25, 1999 (the first Payment
Date) will be less than the Original Principal Amount set forth above.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.

                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO



                                     A-1-2
<PAGE>   125


DEBT OF ANY PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL
INCOME TAX PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class A-1 Group I Certificates (the "Class A-1
Certificates") and issued under and subject to the terms, provisions and
conditions of the Pooling and Servicing Agreement, to which Pooling and
Servicing Agreement the Owner of this Certificate by virtue of acceptance hereof
assents and by which such Owner is bound. Also issued under the Pooling and
Servicing Agreement are Class A-2 Certificates; Class A-3 Certificates; Class
A-4 Certificates; Class A-5 Certificates; Class A-6 Certificates; Class A-7
Certificates; Class B Certificates; Class BS Certificates; Class R Certificates;
Class RL Certificates; and a Certificate representing the right to receive
certain supplemental interest amounts. All such Certificates are collectively
referred to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class A-1
Certificates as of the close of business on the business day immediately
preceding such Payment Date (the "Record Date") will be entitled to receive the
Class A-1 Distribution Amount relating to such Payment Date. Distributions will
be made in immediately available funds to such Owners, by wire transfer or
otherwise, to the account of an Owner at a domestic bank or other entity having
appropriate facilities therefor, if such Owner has so notified the Trustee at
least five business days prior to the related record date, or by check mailed to
the address of the person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class A-1 Certificate will be
entitled to receive such Owner's Percentage Interest in the amounts distributed
on such Payment Date to the Owners of the Class A-1 Certificates. The Percentage
Interest of each Class A-1 Certificate as of any date of determination will be
equal to the percentage obtained by dividing the Original Principal Amount set
forth on such Class A-1 Certificate by $114,000,000.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master Servicer to enter into Sub-Servicing Agreements
with certain institutions eligible for appointment as Sub-Servicers for the
servicing and administration of certain Mortgage Loans.



                                     A-1-3
<PAGE>   126


No appointment of any Sub-Servicer shall release the Master Servicer from any of
its obligations under the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to certain collections and recoveries relating to
the Mortgage Loans in Group I and amounts on deposit in the Accounts (except as
otherwise provided in the Pooling and Servicing Agreement) all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate, may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate acquired on the Startup Date and acquired prior to the end of the
Pre-Funding Period and (ii) under certain circumstances relating to the
qualification of either the Upper-Tier REMIC or the Lower-Tier REMIC as a REMIC
under the Code the Mortgage Loans may be sold, thereby affecting the early
retirement of the Class A-1 Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.

                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing



                                     A-1-4
<PAGE>   127


Agreement, have the right to exercise any trust or power set forth in the
Pooling and Servicing Agreement with respect to the Certificates or the Trust
Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of like
Class, tenor and a like Percentage Interest will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class A-1 Certificates are issuable only as registered
Certificates in denominations of $1,000 original principal amount and integral
multiples of $1,000. As provided in the Pooling and Servicing Agreement and
subject to certain limitations therein set forth, Class A-1 Certificates are
exchangeable for new Class A-1 Certificates of authorized denominations
evidencing the same aggregate principal amount.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.





                                     A-1-5
<PAGE>   128


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:








                                     A-1-6
<PAGE>   129


                                                                     EXHIBIT A-2
                                                  FORM OF CLASS A-2 CERTIFICATES

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                         CLASS A-2 GROUP I CERTIFICATES
                   (Class A-2 Group I Fixed Rate Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                           Mortgage Loans in Group I.
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  Unless this certificate is presented by an authorized
representative of the Depository Trust Company, a New York corporation ("DTC"),
to Issuer or its agent for registration of transfer, exchange, or payment, and
any certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group I described herein,
monies in certain Accounts created pursuant to the Pooling and Servicing
Agreement and certain other rights relating thereto and is payable only from
amounts received by the Trustee relating to the Mortgage Loans in Group I held
by the Trust and (ii) monies held in such Accounts.)

No.:     A-2-1                 June 3, 1999                       00755WGP5
    ------------             ----------------                   -------------
                               Date                               CUSIP

$90,000,000                                    April 25, 2014
- -----------                                    --------------
Original Principal Amount                      Final Scheduled
                                               Payment Date

                                   CEDE & CO.
                                ----------------
                                Registered Owner



                                     A-2-1
<PAGE>   130



                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of fixed rate mortgage loans (the
"Mortgage Loans") assigned to a particular mortgage loan group ("Group I") which
will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or the
"Sponsor"), a Delaware corporation and sold or caused to be sold by the Sponsor
to Bankers Trust Company of California, N.A., a national banking association, as
trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust 1999-2 (the
"Trust") pursuant to that certain Pooling and Servicing Agreement dated as of
May 1, 1999 (the "Pooling and Servicing Agreement") by and among the Sponsor,
the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the "Master
Servicer"), (ii) such amounts in all Accounts including principal collected and
accrued interest in respect of the related Mortgage Loans on or after the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, including Eligible Investments, as may from time to time may be held in
such Accounts (except any premium recapture and interest accrued prior to the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, as applicable and except for net investment earnings on the Principal and
Interest Account, the Capitalized Interest Account and on the Certificate
Account), (iii) any Property relating to the Mortgage Loans in Group I, the
ownership of which has been effected on behalf of the Trust as a result of
foreclosure or acceptance by the Master Servicer of a deed in lieu of
foreclosure and that has not been withdrawn from the Trust, (iv) any Mortgage
Insurance Policies relating to the Mortgage Loans in Group I and any rights of
the Sponsor under any Mortgage Insurance Policies, (v) Net Liquidation Proceeds
relating to the Mortgage Loans in Group I, (vi) the rights of the Trustee under
the Certificate Insurance Policy, and (vii) the rights of the Sponsor against
any Originator pursuant to the related Master Transfer Agreement. Such Mortgage
Loans in Group I and other amounts and property enumerated above are hereinafter
referred to as "Group I."

                  The Original Principal Amount set forth above is equal to the
product of (i) the Percentage Interest represented by this Certificate and (ii)
the aggregate original principal amount of the Class A-2 Certificates on June 3,
1999 (the "Startup Day"), which aggregate amount was $90,000,000. The Owner
hereof is entitled to principal payments on each Payment Date, as hereinafter
described, which will fully amortize such Original Principal Amount over the
period from the date of initial delivery hereof to the final Payment Date of the
Class A-2 Certificates. Therefore, the actual outstanding principal amount of
this Certificate, on any date subsequent to June 25, 1999 (the first Payment
Date) will be less than the Original Principal Amount set forth above.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.

                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO



                                     A-2-2
<PAGE>   131


DEBT OF ANY PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL
INCOME TAX PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class A-2 Group I Certificates (the "Class A-2
Certificates") and issued under and subject to the terms, provisions and
conditions of the Pooling and Servicing Agreement, to which Pooling and
Servicing Agreement the Owner of this Certificate by virtue of acceptance hereof
assents and by which such Owner is bound. Also issued under the Pooling and
Servicing Agreement are Class A-1 Certificates; Class A-3 Certificates; Class
A-4 Certificates; Class A-5 Certificates; Class A-6 Certificates; Class A-7
Certificates; Class B Certificates; Class BS Certificates; Class R Certificates;
Class RL Certificates; and a Certificate representing the right to receive
certain supplemental interest amounts. All such Certificates are collectively
referred to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class A-2
Certificates as of the close of business on the last business day of the
calendar month immediately preceding the calendar month in which such Payment
Date occurs (the "Record Date") will be entitled to receive the Class A-2
Distribution Amount relating to such Payment Date. Distributions will be made in
immediately available funds to such Owners, by wire transfer or otherwise, to
the account of an Owner at a domestic bank or other entity having appropriate
facilities therefor, if such Owner has so notified the Trustee at least five
business days prior to the related record date, or by check mailed to the
address of the person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class A-2 Certificate will be
entitled to receive such Owner's Percentage Interest in the amounts distributed
on such Payment Date to the Owners of the Class A-2 Certificates. The Percentage
Interest of each Class A-2 Certificate as of any date of determination will be
equal to the percentage obtained by dividing the Original Principal Amount set
forth on such Class A-2 Certificate by $90,000,000.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master Servicer to enter into Sub-Servicing Agreements
with certain institutions eligible for



                                     A-2-3
<PAGE>   132


appointment as Sub-Servicers for the servicing and administration of certain
Mortgage Loans. No appointment of any Sub-Servicer shall release the Master
Servicer from any of its obligations under the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to certain collections and recoveries relating to
the Mortgage Loans in Group I and amounts on deposit in the Accounts (except as
otherwise provided in the Pooling and Servicing Agreement) all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate acquired on the Startup Date and acquired prior to the end of the
Pre-Funding Period and (ii) under certain circumstances relating to the
qualification of either the Upper-Tier REMIC or the Lower-Tier REMIC as a REMIC
under the Code the Mortgage Loans may be sold, thereby affecting the early
retirement of the Class A-2 Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.


                                     A-2-4
<PAGE>   133


                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing Agreement, have the right to exercise any
trust or power set forth in the Pooling and Servicing Agreement with respect to
the Certificates or the Trust Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of like
Class, tenor and a like Percentage Interest will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class A-2 Certificates are issuable only as registered
Certificates in denominations of $1,000 original principal amount and integral
multiples of $1,000. As provided in the Pooling and Servicing Agreement and
subject to certain limitations therein set forth, Class A-2 Certificates are
exchangeable for new Class A-2 Certificates of authorized denominations
evidencing the same aggregate principal amount.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.





                                     A-2-5
<PAGE>   134


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:





                                     A-2-6
<PAGE>   135


                                                                     EXHIBIT A-3
                                                  FORM OF CLASS A-3 CERTIFICATES

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                         CLASS A-3 GROUP I CERTIFICATES
                   (Class A-3 Group I Fixed Rate Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                           Mortgage Loans in Group I.
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  Unless this certificate is presented by an authorized
representative of the Depository Trust Company, a New York corporation ("DTC"),
to Issuer or its agent for registration of transfer, exchange, or payment, and
any certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group I described herein,
monies in certain Accounts created pursuant to the Pooling and Servicing
Agreement and certain other rights relating thereto and is payable only from
amounts received by the Trustee relating to the Mortgage Loans in Group I held
by the Trust and (ii) monies held in such Accounts.)

No.:     A-3-1                 June 3, 1999                       00755WGQ3
    ------------             ----------------                   -------------
                               Date                               CUSIP

$40,000,000                                    May 25, 2016
- -----------                                    ------------
Original Principal Amount                      Final Scheduled
                                               Payment Date

                                   CEDE & CO.
                                ----------------
                                Registered Owner




                                     A-3-1
<PAGE>   136


                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of fixed rate mortgage loans (the
"Mortgage Loans") assigned to a particular mortgage loan group ("Group I") which
will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or the
"Sponsor"), a Delaware corporation and sold or caused to be sold by the Sponsor
to Bankers Trust Company of California, N.A., a national banking association, as
trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust 1999-2 (the
"Trust") pursuant to that certain Pooling and Servicing Agreement dated as of
May 1, 1999 (the "Pooling and Servicing Agreement") by and among the Sponsor,
the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the "Master
Servicer"), (ii) such amounts in all Accounts including principal collected and
accrued interest in respect of the related Mortgage Loans on or after the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, including Eligible Investments, as may from time to time may be held in
such Accounts (except any premium recapture and interest accrued prior to the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, as applicable and except for net investment earnings on the Principal and
Interest Account, the Capitalized Interest Account and on the Certificate
Account), (iii) any Property relating to the Mortgage Loans in Group I, the
ownership of which has been effected on behalf of the Trust as a result of
foreclosure or acceptance by the Master Servicer of a deed in lieu of
foreclosure and that has not been withdrawn from the Trust, (iv) any Mortgage
Insurance Policies relating to the Mortgage Loans in Group I and any rights of
the Sponsor under any Mortgage Insurance Policies, (v) Net Liquidation Proceeds
relating to the Mortgage Loans in Group I, (vi) the rights of the Trustee under
the Certificate Insurance Policy, and (vii) the rights of the Sponsor against
any Originator pursuant to the related Master Transfer Agreement. Such Mortgage
Loans in Group I and other amounts and property enumerated above are hereinafter
referred to as "Group I."

                  The Original Principal Amount set forth above is equal to the
product of (i) the Percentage Interest represented by this Certificate and (ii)
the aggregate original principal amount of the Class A-3 Certificates on June 3,
1999 (the "Startup Day"), which aggregate amount was $40,000,000. The Owner
hereof is entitled to principal payments on each Payment Date, as hereinafter
described, which will fully amortize such Original Principal Amount over the
period from the date of initial delivery hereof to the final Payment Date of the
Class A-3 Certificates. Therefore, the actual outstanding principal amount of
this Certificate, on any date subsequent to June 25, 1999 (the first Payment
Date) will be less than the Original Principal Amount set forth above.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.

                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO



                                     A-3-2
<PAGE>   137


DEBT OF ANY PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL
INCOME TAX PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class A-3 Group I Certificates (the "Class A-3
Certificates") and issued under and subject to the terms, provisions and
conditions of the Pooling and Servicing Agreement, to which Pooling and
Servicing Agreement the Owner of this Certificate by virtue of acceptance hereof
assents and by which such Owner is bound. Also issued under the Pooling and
Servicing Agreement are Class A-1 Certificates; Class A-2 Certificates; Class
A-4 Certificates; Class A-5 Certificates; Class A-6 Certificates; Class A-7
Certificates; Class B Certificates; Class BS Certificates; Class R Certificates;
Class RL Certificates and a Certificate representing the right to receive
certain supplemental interest amounts; all such Certificates are collectively
referred to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class A-3
Certificates as of the close of business on the last business day of the
calendar month immediately preceding the calendar month in which such Payment
Date occurs (the "Record Date") will be entitled to receive the Class A-3
Distribution Amount relating to such Payment Date. Distributions will be made in
immediately available funds to such Owners, by wire transfer or otherwise, to
the account of an Owner at a domestic bank or other entity having appropriate
facilities therefor, if such Owner has so notified the Trustee at least five
business days prior to the related record date, or by check mailed to the
address of the person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class A-3 Certificate will be
entitled to receive such Owner's Percentage Interest in the amounts distributed
on such Payment Date to the Owners of the Class A-3 Certificates. The Percentage
Interest of each Class A-3 Certificate as of any date of determination will be
equal to the percentage obtained by dividing the Original Principal Amount set
forth on such Class A-3 Certificate by $40,000,000.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master Servicer to enter into Sub-Servicing Agreements
with certain institutions eligible for



                                     A-3-3
<PAGE>   138


appointment as Sub-Servicers for the servicing and administration of certain
Mortgage Loans. No appointment of any Sub-Servicer shall release the Master
Servicer from any of its obligations under the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to certain collections and recoveries relating to
the Mortgage Loans in Group I and amounts on deposit in the Accounts (except as
otherwise provided in the Pooling and Servicing Agreement) all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate acquired on the Startup Date and acquired prior to the end of the
Pre-Funding Period and (ii) under certain circumstances relating to the
qualification of either the Upper-Tier REMIC or the Lower-Tier REMIC as a REMIC
under the Code the Mortgage Loans may be sold, thereby affecting the early
retirement of the Class A-3 Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.


                                     A-3-4
<PAGE>   139


                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing Agreement, have the right to exercise any
trust or power set forth in the Pooling and Servicing Agreement with respect to
the Certificates or the Trust Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of like
Class, tenor and a like Percentage Interest will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class A-3 Certificates are issuable only as registered
Certificates in denominations of $1,000 original principal amount and integral
multiples of $1,000. As provided in the Pooling and Servicing Agreement and
subject to certain limitations therein set forth, Class A-3 Certificates are
exchangeable for new Class A-3 Certificates of authorized denominations
evidencing the same aggregate principal amount.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.






                                     A-3-5
<PAGE>   140


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:





                                     A-3-6
<PAGE>   141


                                                                     EXHIBIT A-4
                                                  FORM OF CLASS A-4 CERTIFICATES

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                         CLASS A-4 GROUP I CERTIFICATES
                   (Class A-4 Group I Fixed Rate Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                           Mortgage Loans in Group I.
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  Unless this certificate is presented by an authorized
representative of the Depository Trust Company, a New York corporation ("DTC"),
to Issuer or its agent for registration of transfer, exchange, or payment, and
any certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group I described herein,
monies in certain Accounts created pursuant to the Pooling and Servicing
Agreement and certain other rights relating thereto and is payable only from
amounts received by the Trustee relating to the Mortgage Loans in Group I held
by the Trust and (ii) monies held in such Accounts.)

No.:     A-4-1                 June 3, 1999                       00755WGR1
    ------------             ----------------                   -------------
                               Date                               CUSIP

$95,000,000                                         May 25, 2026
- -----------                                         ------------
Original Principal Amount                           Final Scheduled
                                                    Payment Date

                                   CEDE & CO.
                                ----------------
                                Registered Owner





                                     A-4-1
<PAGE>   142


                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of fixed rate mortgage loans (the
"Mortgage Loans") assigned to a particular mortgage loan group ("Group I") which
will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or the
"Sponsor"), a Delaware corporation and sold or caused to be sold by the Sponsor
to Bankers Trust Company of California, N.A., a national banking association, as
trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust 1999-2 (the
"Trust") pursuant to that certain Pooling and Servicing Agreement dated as of
May 1, 1999 (the "Pooling and Servicing Agreement") by and among the Sponsor,
the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the "Master
Servicer"), (ii) such amounts in all Accounts including principal collected and
accrued interest in respect of the related Mortgage Loans on or after the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, including Eligible Investments, as may from time to time may be held in
such Accounts (except any premium recapture and interest accrued prior to the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, as applicable and except for net investment earnings on the Principal and
Interest Account, the Capitalized Interest Account and on the Certificate
Account), (iii) any Property relating to the Mortgage Loans in Group I, the
ownership of which has been effected on behalf of the Trust as a result of
foreclosure or acceptance by the Master Servicer of a deed in lieu of
foreclosure and that has not been withdrawn from the Trust, (iv) any Mortgage
Insurance Policies relating to the Mortgage Loans in Group I and any rights of
the Sponsor under any Mortgage Insurance Policies, (v) Net Liquidation Proceeds
relating to the Mortgage Loans in Group I, (vi) the rights of the Trustee under
the Certificate Insurance Policy, and (vii) the rights of the Sponsor against
any Originator pursuant to the related Master Transfer Agreement. Such Mortgage
Loans in Group I and other amounts and property enumerated above are hereinafter
referred to as "Group I."

                  The Original Principal Amount set forth above is equal to the
product of (i) the Percentage Interest represented by this Certificate and (ii)
the aggregate original principal amount of the Class A-4 Certificates on June 3,
1999 (the "Startup Day"), which aggregate amount was $95,000,000. The Owner
hereof is entitled to principal payments on each Payment Date, as hereinafter
described, which will fully amortize such Original Principal Amount over the
period from the date of initial delivery hereof to the final Payment Date of the
Class A-4 Certificates. Therefore, the actual outstanding principal amount of
this Certificate, on any date subsequent to June 25, 1999 (the first Payment
Date) will be less than the Original Principal Amount set forth above.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.

                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO



                                     A-4-2
<PAGE>   143


DEBT OF ANY PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL
INCOME TAX PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class A-4 Group I Certificates (the "Class A-4
Certificates") and issued under and subject to the terms, provisions and
conditions of the Pooling and Servicing Agreement, to which Pooling and
Servicing Agreement the Owner of this Certificate by virtue of acceptance hereof
assents and by which such Owner is bound. Also issued under the Pooling and
Servicing Agreement are Class A-1 Certificates; Class A-2 Certificates; Class
A-3 Certificates; Class A-5 Certificates; Class A-6 Certificates; Class A-7
Certificates; Class B Certificates; Class BS Certificates; Class R Certificates;
Class RL Certificates and a Certificate representing the right to receive
certain supplemental interest amounts; all such Certificates are collectively
referred to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class A-4
Certificates as of the close of business on the last business day of the
calendar month immediately preceding the calendar month in which such Payment
Date occurs (the "Record Date") will be entitled to receive the Class A-4
Distribution Amount relating to such Payment Date. Distributions will be made in
immediately available funds to such Owners, by wire transfer or otherwise, to
the account of an Owner at a domestic bank or other entity having appropriate
facilities therefor, if such Owner has so notified the Trustee at least five
business days prior to the related record date, or by check mailed to the
address of the person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class A-4 Certificate will be
entitled to receive such Owner's Percentage Interest in the amounts distributed
on such Payment Date to the Owners of the Class A-4 Certificates. The Percentage
Interest of each Class A-4 Certificate as of any date of determination will be
equal to the percentage obtained by dividing the Original Principal Amount set
forth on such Class A-4 Certificate by $95,000,000.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master Servicer to enter into Sub-Servicing Agreements
with certain institutions eligible for



                                     A-4-3
<PAGE>   144


appointment as Sub-Servicers for the servicing and administration of certain
Mortgage Loans. No appointment of any Sub-Servicer shall release the Master
Servicer from any of its obligations under the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to certain collections and recoveries relating to
the Mortgage Loans in Group I and amounts on deposit in the Accounts (except as
otherwise provided in the Pooling and Servicing Agreement) all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate acquired on the Startup Date and acquired prior to the end of the
Pre-Funding Period and (ii) under certain circumstances relating to the
qualification of either the Upper-Tier REMIC or the Lower-Tier REMIC as a REMIC
under the Code the Mortgage Loans may be sold, thereby affecting the early
retirement of the Class A-4 Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.


                                     A-4-4
<PAGE>   145


                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing Agreement, have the right to exercise any
trust or power set forth in the Pooling and Servicing Agreement with respect to
the Certificates or the Trust Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of like
Class, tenor and a like Percentage Interest will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class A-4 Certificates are issuable only as registered
Certificates in denominations of $1,000 original principal amount and integral
multiples of $1,000. As provided in the Pooling and Servicing Agreement and
subject to certain limitations therein set forth, Class A-4 Certificates are
exchangeable for new Class A-4 Certificates of authorized denominations
evidencing the same aggregate principal amount.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.






                                     A-4-5
<PAGE>   146


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:





                                     A-4-6
<PAGE>   147


                                                                     EXHIBIT A-5
                                                  FORM OF CLASS A-5 CERTIFICATES

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                         CLASS A-5 GROUP I CERTIFICATES
                   (Class A-5 Group I Fixed Rate Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                           Mortgage Loans in Group I.
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  Unless this certificate is presented by an authorized
representative of the Depository Trust Company, a New York corporation ("DTC"),
to Issuer or its agent for registration of transfer, exchange, or payment, and
any certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group I described herein,
monies in certain Accounts created pursuant to the Pooling and Servicing
Agreement and certain other rights relating thereto and is payable only from
amounts received by the Trustee relating to the Mortgage Loans in Group I held
by the Trust and (ii) monies held in such Accounts.)

No.:     A-5-1                 June 3, 1999                       00755WGS9
    ------------             ----------------                   -------------
                               Date                               CUSIP

$31,700,000                                       May 25, 2029
- -----------                                       ------------
Original Principal Amount                         Final Scheduled
                                                  Payment Date

                                   CEDE & CO.
                                ----------------
                                Registered Owner





                                     A-5-1
<PAGE>   148


                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of fixed rate mortgage loans (the
"Mortgage Loans") assigned to a particular mortgage loan group ("Group I") which
will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or the
"Sponsor"), a Delaware corporation and sold or caused to be sold by the Sponsor
to Bankers Trust Company of California, N.A., a national banking association, as
trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust 1999-2 (the
"Trust") pursuant to that certain Pooling and Servicing Agreement dated as of
May 1, 1999 (the "Pooling and Servicing Agreement") by and among the Sponsor,
the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the "Master
Servicer"), (ii) such amounts in all Accounts including principal collected and
accrued interest in respect of the related Mortgage Loans on or after the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, including Eligible Investments, as may from time to time may be held in
such Accounts (except any premium recapture and interest accrued prior to the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, as applicable and except for net investment earnings on the Principal and
Interest Account, the Capitalized Interest Account and on the Certificate
Account), (iii) any Property relating to the Mortgage Loans in Group I, the
ownership of which has been effected on behalf of the Trust as a result of
foreclosure or acceptance by the Master Servicer of a deed in lieu of
foreclosure and that has not been withdrawn from the Trust, (iv) any Mortgage
Insurance Policies relating to the Mortgage Loans in Group I and any rights of
the Sponsor under any Mortgage Insurance Policies, (v) Net Liquidation Proceeds
relating to the Mortgage Loans in Group I, (vi) the rights of the Trustee under
the Certificate Insurance Policy, and (vii) the rights of the Sponsor against
any Originator pursuant to the related Master Transfer Agreement. Such Mortgage
Loans in Group I and other amounts and property enumerated above are hereinafter
referred to as "Group I."

                  The Original Principal Amount set forth above is equal to the
product of (i) the Percentage Interest represented by this Certificate and (ii)
the aggregate original principal amount of the Class A-5 Certificates on June 3,
1999 (the "Startup Day"), which aggregate amount was $31,700,000. The Owner
hereof is entitled to principal payments on each Payment Date, as hereinafter
described, which will fully amortize such Original Principal Amount over the
period from the date of initial delivery hereof to the final Payment Date of the
Class A-5 Certificates. Therefore, the actual outstanding principal amount of
this Certificate, on any date subsequent to June 25, 1999 (the first Payment
Date) will be less than the Original Principal Amount set forth above.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.

                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO



                                     A-5-2
<PAGE>   149


DEBT OF ANY PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL
INCOME TAX PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class A-5 Group I Certificates (the "Class A-5
Certificates") and issued under and subject to the terms, provisions and
conditions of the Pooling and Servicing Agreement, to which Pooling and
Servicing Agreement the Owner of this Certificate by virtue of acceptance hereof
assents and by which such Owner is bound. Also issued under the Pooling and
Servicing Agreement are Class A-1 Certificates; Class A-2 Certificates; Class
A-3 Certificates; Class A-4 Certificates; Class A-6 Certificates; Class A-7
Certificates; Class B Certificates; Class BS Certificates; Class R Certificates;
Class RL Certificates and a Certificate representing the right to receive
certain supplemental interest amounts, all such Certificates are collectively
referred to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class A-5
Certificates as of the close of business on the last business day of the
calendar month immediately preceding the calendar month in which such Payment
Date occurs (the "Record Date") will be entitled to receive the Class A-5
Distribution Amount relating to such Payment Date. Distributions will be made in
immediately available funds to such Owners, by wire transfer or otherwise, to
the account of an Owner at a domestic bank or other entity having appropriate
facilities therefor, if such Owner has so notified the Trustee at least five
business days prior to the related record date, or by check mailed to the
address of the person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class A-5 Certificate will be
entitled to receive such Owner's Percentage Interest in the amounts distributed
on such Payment Date to the Owners of the Class A-5 Certificates. The Percentage
Interest of each Class A-5 Certificate as of any date of determination will be
equal to the percentage obtained by dividing the Original Principal Amount set
forth on such Class A-5 Certificate by $31,700,000.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master Servicer to enter into Sub-Servicing Agreements
with certain institutions eligible for



                                     A-5-3
<PAGE>   150


appointment as Sub-Servicers for the servicing and administration of certain
Mortgage Loans. No appointment of any Sub-Servicer shall release the Master
Servicer from any of its obligations under the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to certain collections and recoveries relating to
the Mortgage Loans in Group I and amounts on deposit in the Accounts (except as
otherwise provided in the Pooling and Servicing Agreement) all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate acquired on the Startup Date and acquired prior to the end of the
Pre-Funding Period and (ii) under certain circumstances relating to the
qualification of either the Upper-Tier REMIC or the Lower-Tier REMIC as a REMIC
under the Code the Mortgage Loans may be sold, thereby affecting the early
retirement of the Class A-5 Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.


                                     A-5-4
<PAGE>   151


                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing Agreement, have the right to exercise any
trust or power set forth in the Pooling and Servicing Agreement with respect to
the Certificates or the Trust Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of like
Class, tenor and a like Percentage Interest will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class A-5 Certificates are issuable only as registered
Certificates in denominations of $1,000 original principal amount and integral
multiples of $1,000. As provided in the Pooling and Servicing Agreement and
subject to certain limitations therein set forth, Class A-5 Certificates are
exchangeable for new Class A-5 Certificates of authorized denominations
evidencing the same aggregate principal amount.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.






                                     A-5-5
<PAGE>   152


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:





                                     A-5-6
<PAGE>   153


                                                                     EXHIBIT A-6
                                                  FORM OF CLASS A-6 CERTIFICATES

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                         CLASS A-6 GROUP I CERTIFICATES
                   (Class A-6 Group I Fixed Rate Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                           Mortgage Loans in Group I.
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  Unless this certificate is presented by an authorized
representative of the Depository Trust Company, a New York corporation ("DTC"),
to Issuer or its agent for registration of transfer, exchange, or payment, and
any certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group I described herein,
monies in certain Accounts created pursuant to the Pooling and Servicing
Agreement and certain other rights relating thereto and is payable only from
amounts received by the Trustee relating to the Mortgage Loans in Group I held
by the Trust and (ii) monies held in such Accounts.)

No.:     A-6-1                 June 3, 1999                       00755WGT7
    ------------             ----------------                   -------------
                               Date                               CUSIP

$41,000,000                                        April 25, 2014
- -----------                                        --------------
Original Principal Amount                          Final Scheduled
                                                   Payment Date

                                   CEDE & CO.
                                ----------------
                                Registered Owner





                                     A-6-1
<PAGE>   154


                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of fixed rate mortgage loans (the
"Mortgage Loans") assigned to a particular mortgage loan group ("Group I") which
will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or the
"Sponsor"), a Delaware corporation and sold or caused to be sold by the Sponsor
to Bankers Trust Company of California, N.A., a national banking association, as
trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust 1999-2 (the
"Trust") pursuant to that certain Pooling and Servicing Agreement dated as of
May 1, 1999 (the "Pooling and Servicing Agreement") by and among the Sponsor,
the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the "Master
Servicer"), (ii) such amounts in all Accounts including principal collected and
accrued interest in respect of the related Mortgage Loans on or after the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, including Eligible Investments, as may from time to time may be held in
such Accounts (except any premium recapture and interest accrued prior to the
Initial Cut-Off Date, each Subsequent Cut-Off Date and each Replacement Cut-Off
Date, as applicable and except for net investment earnings on the Principal and
Interest Account, the Capitalized Interest Account and on the Certificate
Account), (iii) any Property relating to the Mortgage Loans in Group I, the
ownership of which has been effected on behalf of the Trust as a result of
foreclosure or acceptance by the Master Servicer of a deed in lieu of
foreclosure and that has not been withdrawn from the Trust, (iv) any Mortgage
Insurance Policies relating to the Mortgage Loans in Group I and any rights of
the Sponsor under any Mortgage Insurance Policies, (v) Net Liquidation Proceeds
relating to the Mortgage Loans in Group I, (vi) the rights of the Trustee under
the Certificate Insurance Policy, and (vii) the rights of the Sponsor against
any Originator pursuant to the related Master Transfer Agreement. Such Mortgage
Loans in Group I and other amounts and property enumerated above are hereinafter
referred to as "Group I."

                  The Original Principal Amount set forth above is equal to the
product of (i) the Percentage Interest represented by this Certificate and (ii)
the aggregate original principal amount of the Class A-6 Certificates on June 3,
1999 (the "Startup Day"), which aggregate amount was $41,000,000. The Owner
hereof is entitled to principal payments in the amounts and at the times set
forth in the Pooling and Servicing Agreement, which will fully amortize such
Original Principal Amount over the period from the date of initial delivery
hereof to the final Payment Date of the Class A-6 Certificates. Therefore, the
actual outstanding principal amount of this Certificate, on any date subsequent
to June 25, 1999 (the first Payment Date) will be less than the Original
Principal Amount set forth above.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.

                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO



                                     A-6-2
<PAGE>   155


DEBT OF ANY PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL
INCOME TAX PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class A-6 Group I Certificates (the "Class A-6
Certificates") and issued under and subject to the terms, provisions and
conditions of the Pooling and Servicing Agreement, to which Pooling and
Servicing Agreement the Owner of this Certificate by virtue of acceptance hereof
assents and by which such Owner is bound. Also issued under the Pooling and
Servicing Agreement are Class A-1 Certificates; Class A-2 Certificates; Class
A-3 Certificates; Class A-4 Certificates; Class A-5 Certificates; Class A-7
Certificates; Class B Certificates; Class BS Certificates; Class R Certificates;
Class RL Certificates and a Certificate representing the right to receive
certain supplemental interest amounts, all such Certificates are collectively
referred to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class A-6
Certificates as of the close of business on the last business day of the
calendar month immediately preceding the calendar month in which such Payment
Date occurs (the "Record Date") will be entitled to receive the Class A-6
Distribution Amount relating to such Payment Date. Distributions will be made in
immediately available funds to such Owners, by wire transfer or otherwise, to
the account of an Owner at a domestic bank or other entity having appropriate
facilities therefor, if such Owner has so notified the Trustee at least five
business days prior to the related record date, or by check mailed to the
address of the person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class A-6 Certificate will be
entitled to receive such Owner's Percentage Interest in the amounts distributed
on such Payment Date to the Owners of the Class A-6 Certificates. The Percentage
Interest of each Class A-6 Certificate as of any date of determination will be
equal to the percentage obtained by dividing the Original Principal Amount set
forth on such Class A-6 Certificate by $41,000,000.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master Servicer to enter into Sub-Servicing Agreements
with certain institutions eligible for



                                     A-6-3
<PAGE>   156


appointment as Sub-Servicers for the servicing and administration of certain
Mortgage Loans. No appointment of any Sub-Servicer shall release the Master
Servicer from any of its obligations under the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to certain collections and recoveries relating to
the Mortgage Loans in Group I and amounts on deposit in the Accounts (except as
otherwise provided in the Pooling and Servicing Agreement) all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate acquired on the Startup Date and acquired prior to the end of the
Pre-Funding Period and (ii) under certain circumstances relating to the
qualification of either the Upper-Tier REMIC or the Lower-Tier REMIC as a REMIC
under the Code the Mortgage Loans may be sold, thereby affecting the early
retirement of the Class A-6 Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.


                                     A-6-4
<PAGE>   157


                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing Agreement, have the right to exercise any
trust or power set forth in the Pooling and Servicing Agreement with respect to
the Certificates or the Trust Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of like
Class, tenor and a like Percentage Interest will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class A-6 Certificates are issuable only as registered
Certificates in denominations of $1,000 original principal amount and integral
multiples of $1,000. As provided in the Pooling and Servicing Agreement and
subject to certain limitations therein set forth, Class A-6 Certificates are
exchangeable for new Class A-6 Certificates of authorized denominations
evidencing the same aggregate principal amount.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.






                                     A-6-5
<PAGE>   158


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:






                                     A-6-6
<PAGE>   159


                                                                     EXHIBIT A-7
                                                  FORM OF CLASS A-7 CERTIFICATES

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                        CLASS A-7 GROUP II CERTIFICATES
                 (Class A-7 Group II Floating Rate Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                           Mortgage Loans in Group II
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  Unless this certificate is presented by an authorized
representative of the Depository Trust Company, a New York corporation ("DTC"),
to Issuer or its agent for registration of transfer, exchange, or payment, and
any certificate issued is registered in the name of Cede & Co. or in such other
name as is requested by an authorized representative of DTC (and any payment is
made to Cede & Co. or to such other entity as is requested by an authorized
representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein.

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group II described herein,
monies in certain Accounts created pursuant to the Pooling and Servicing
Agreement and certain other rights relating thereto and is payable only from
amounts received by the Trustee relating to the Mortgage Loans in Group II held
by the Trust, and (ii) monies held in such Accounts.)

No.:     A-7-1                 June 3, 1999                       00755WGU4
    ------------             ----------------                   -------------
                               Date                               CUSIP

$105,800,000                                May 25, 2029
                                            ------------
Original Principal Amount                   Final Scheduled
                                            Payment Date

                                   CEDE & CO.
                                ----------------
                                Registered Owner





                                     A-7-1
<PAGE>   160


                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of adjustable rate mortgage loans
(the "Mortgage Loans") assigned to a particular mortgage loan group ("Group II")
which will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or
the "Sponsor"), a Delaware corporation and sold or caused to be sold by the
Sponsor to Bankers Trust Company of California, N.A., a national banking
association, as trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust
1999-2 (the "Trust") pursuant to that certain Pooling and Servicing Agreement
dated as of May 1, 1999 (the "Pooling and Servicing Agreement") by and among the
Sponsor, the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the
"Master Servicer"), (ii) such amounts in all Accounts including principal
collected and accrued interest in respect of the related Mortgage Loans on or
after the Initial Cut-Off Date, each Subsequent Cut-Off Date and each
Replacement Cut-Off Date, including Eligible Investments, as may from time to
time may be held in such Accounts (except any premium recapture and interest
accrued prior to the Initial Cut-Off Date, each Subsequent Cut-Off Date and each
Replacement Cut-Off Date, as applicable and except for net investment earnings
on the Principal and Interest Account, the Capitalized Interest Account and on
the Certificate Account), (iii) any Property relating to the Mortgage Loans in
Group II, the ownership of which has been effected on behalf of the Trust as a
result of foreclosure or acceptance by the Master Servicer of a deed in lieu of
foreclosure and that has not been withdrawn from the Trust, (iv) any Mortgage
Insurance Policies relating to the Mortgage Loans in Group II and any rights of
the Sponsor under any Mortgage Insurance Policies, (v) Net Liquidation Proceeds
relating to the Mortgage Loans in Group II, (vi) the rights of the Trustee under
the Certificate Insurance Policy, and (vii) the rights of the Sponsor against
any Originator pursuant to the related Master Transfer Agreement. Such Mortgage
Loans in Group II and other amounts and property enumerated above are
hereinafter referred to as "Group II."

                  The Original Principal Amount set forth above is equal to the
product of (i) the Percentage Interest represented by this Certificate and (ii)
the aggregate original principal amount of the Class A-7 Certificates on June 3,
1999 (the "Startup Day"), which aggregate amount was $105,800,000. The Owner
hereof is entitled to principal payments on each Payment Date, as hereinafter
described, which will fully amortize such Original Principal Amount over the
period from the date of initial delivery hereof to the final Payment Date of the
Class A-7 Certificates. Therefore, the actual outstanding principal amount of
this Certificate, on any date subsequent to June 25, 1999 (the first Payment
Date) will be less than the Original Principal Amount set forth above.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.


                                     A-7-2
<PAGE>   161


                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO DEBT OF ANY
PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL INCOME TAX
PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class A-7 Group II Certificates (the "Class A-7
Certificates") and issued under and subject to the terms, provisions and
conditions of the Pooling and Servicing Agreement, to which Pooling and
Servicing Agreement the Owner of this Certificate by virtue of acceptance hereof
assents and by which such Owner is bound. Also issued under the Pooling and
Servicing Agreement are Class A-1 Certificates; Class A-2 Certificates; Class
A-3 Certificates; Class A-4 Certificates; Class A-5 Certificates; Class A-6
Certificates; Class B Certificates; Class BS Certificates; Class R Certificates;
Class RL Certificates and a Certificate representing the right to receive
certain supplemental interest amounts, all such Certificates are collectively
referred to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class A-7
Certificates as of the close of business on the business day immediately
preceding such Payment Date (the "Record Date") will be entitled to receive the
Class A-7 Distribution Amount relating to such Payment Date. Distributions will
be made in immediately available funds to such Owners, by wire transfer or
otherwise, to the account of an Owner at a domestic bank or other entity having
appropriate facilities therefor, if such Owner has so notified the Trustee at
least five business days prior to the related record date, or by check mailed to
the address of the person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class A-7 Certificate will be
entitled to receive such Owner's Percentage Interest in the amounts distributed
on such Payment Date to the Owners of the Class A-7 Certificates. The Percentage
Interest of each Class A-7 Certificate as of any date of determination will be
equal to the percentage obtained by dividing the Original Principal Amount set
forth on such Class A-7 Certificate by $105,800,000.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master



                                     A-7-3
<PAGE>   162


Servicer to enter into Sub-Servicing Agreements with certain institutions
eligible for appointment as Sub-Servicers for the servicing and administration
of certain Mortgage Loans. No appointment of any Sub-Servicer shall release the
Master Servicer from any of its obligations under the Pooling and Servicing
Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to certain collections and recoveries relating to
the Mortgage Loans in Group II and amounts on deposit in the Accounts (except as
otherwise provided in the Pooling and Servicing Agreement) all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate as of the Closing Date and (ii) under certain circumstances
relating to the qualification of either the Upper-Tier REMIC or the Lower-Tier
REMIC as a REMIC under the Code the Mortgage Loans may be sold, thereby
affecting the early retirement of the Class A-7 Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.


                                     A-7-4
<PAGE>   163


                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing Agreement, have the right to exercise any
trust or power set forth in the Pooling and Servicing Agreement with respect to
the Certificates or the Trust Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of like
Class, tenor and a like Percentage Interest will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class A-7 Certificates are issuable only as registered
Certificates in denominations of $1,000 original principal amount and integral
multiples of $1,000. As provided in the Pooling and Servicing Agreement and
subject to certain limitations therein set forth, Class A-7 Certificates are
exchangeable for new Class A-7 Certificates of authorized denominations
evidencing the same aggregate principal amount.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.






                                     A-7-5
<PAGE>   164


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:




                                     A-7-6
<PAGE>   165


                                                                     EXHIBIT A-R
                                                    FORM OF CLASS R CERTIFICATES

                  TRANSFER OF THIS CLASS R CERTIFICATE IS RESTRICTED AS SET
FORTH IN THE POOLING AND SERVICING AGREEMENT. NO TRANSFER OF THIS CLASS R
CERTIFICATE MAY BE MADE TO A "DISQUALIFIED ORGANIZATION" AS DEFINED IN SECTION
860E(e)(5) OF THE CODE. SUCH TERM INCLUDES THE UNITED STATES, ANY STATE OR
POLITICAL SUBDIVISION THEREOF, ANY FOREIGN GOVERNMENT, ANY INTERNATIONAL
ORGANIZATION, ANY AGENCY OR INSTRUMENTALITY OF ANY OF THE FOREGOING (OTHER THAN
CERTAIN TAXABLE INSTRUMENTALITIES), ANY COOPERATIVE ORGANIZATION FURNISHING
ELECTRIC ENERGY OR PROVIDING THEREOF SERVICE TO PERSONS IN RURAL AREAS, OR ANY
ORGANIZATION (OTHER THAN A FARMERS' COOPERATIVE) THAT IS EXEMPT FROM FEDERAL
INCOME TAX UNLESS SUCH ORGANIZATION IS SUBJECT TO THE TAX ON UNRELATED BUSINESS
INCOME. NO TRANSFER OF THIS CLASS R CERTIFICATE WILL BE REGISTERED BY THE
TRUSTEE UNLESS THE PROPOSED TRANSFEREE HAS DELIVERED AN AFFIDAVIT AFFIRMING,
AMONG OTHER THINGS, THAT THE PROPOSED TRANSFEREE IS NOT A DISQUALIFIED
ORGANIZATION AND IS NOT ACQUIRING THE CLASS R CERTIFICATE FOR THE ACCOUNT OF A
DISQUALIFIED ORGANIZATION. A COPY OF THE FORM OF AFFIDAVIT REQUIRED OF EACH
PROPOSED TRANSFEREE IS ON FILE AND AVAILABLE FROM THE TRUSTEE.

                  A TRANSFER IN VIOLATION OF THE APPLICABLE RESTRICTIONS MAY
GIVE RISE TO A SUBSTANTIAL TAX UPON THE TRANSFEROR OR, IN CERTAIN CASES, UPON AN
AGENT ACTING FOR THE TRANSFEREE. A PASS-THROUGH ENTITY THAT HOLDS THIS CLASS R
CERTIFICATE AND THAT HAS A DISQUALIFIED ORGANIZATION AS A RECORD OWNER IN ANY
TAXABLE YEAR GENERALLY WILL BE SUBJECT TO A TAX FOR EACH SUCH YEAR EQUAL TO THE
PRODUCT OF (A) THE AMOUNT OF EXCESS INCLUSIONS WITH RESPECT TO THE PORTION OF
THIS CERTIFICATE OWNED THROUGH SUCH PASS-THROUGH ENTITY BY SUCH DISQUALIFIED
ORGANIZATION AND (B) THE HIGHEST MARGINAL FEDERAL TAX RATE ON CORPORATIONS. FOR
PURPOSES OF THE PRECEDING SENTENCE, THE TERM "PASS-THROUGH" ENTITY INCLUDES
REGULATED INVESTMENT COMPANIES, REAL ESTATE INVESTMENT TRUSTS, COMMON TRUST
FUNDS, PARTNERSHIPS, TRUSTS, ESTATES, COOPERATIVES TO WHICH PART I OF SUBCHAPTER
1T OF THE CODE APPLIES AND, EXCEPT AS PROVIDED IN REGULATIONS, NOMINEES.

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.





                                     A-R-1
<PAGE>   166


                  THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE
WITHOUT REGISTRATION THEREOF UNDER THE ACT MAY BE MADE ONLY IN A TRANSACTION
EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
PROVISIONS OF SECTION 5.8 OF THE POOLING AND SERVICING AGREEMENT REFERRED TO
HEREIN.


                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                                     CLASS R


                  This Certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Corp., any Originator or any of their subsidiaries and
affiliates.

No:      R-1-1                                            Date:   June 3, 1999
   ---------------                                             -----------------


Percentage Interest: 100%                                 May 25, 2029
                     ---                                  ------------
                                                          Final Scheduled
                                                          Payment Date

                             ---------------------
                                Registered Owner


                  This Certificate is one of a Class of duly authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Class R
Certificates (the "Class R Certificates") and issued under and subject to the
terms, provisions and conditions of the Pooling and Servicing Agreement, dated
as of May 1, 1999 (the "Pooling and Servicing Agreement"), by and among Advanta
Mortgage Conduit Services, Inc. (the "Sponsor"), Bankers Trust Company of
California (the "Trustee"), and Advanta Mortgage Corp. USA (the "Master
Servicer") to which Pooling and Servicing Agreement the Owner of this
Certificate by virtue of acceptance hereof assents and by which such Owner is
bound.

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date"), commencing June 25, 1999 to the persons in whose names the
Class R Certificates are registered at the close of business on the last
business day of the calendar month immediately preceding the calendar month in
which such Payment Date occurs (the "Record Date"), the Trustee will distribute
to each Owner of the Class R Certificates such Owner's Percentage Interest
multiplied by any amounts then available to be distributed to the Owners of the
Class R Certificates. Distributions will be made in immediately available funds,
by wire transfer or otherwise, to the account of such Owner at a domestic bank
or other entity having appropriate facilities therefor, if such Owner has so
notified



                                     A-R-2
<PAGE>   167


the Trustee at least five business days prior to the related record date, or by
check mailed to the address of the person entitled thereto as it appears on the
Register.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable state or local law by any Person from a distribution to
any Owner shall be considered as having been paid by the Trustee to such Owner
for all purposes of the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, the Sponsor, Advanta Mortgage Corp. USA, Advanta National
Bank, Advanta Bank Corp., Advanta Corp. or any of their subsidiaries and
affiliates and are not insured or guaranteed by the Federal Deposit Insurance
Corporation, the Government National Mortgage Association, or any other
governmental agency. This Certificate is limited in right of payment to certain
collections and recoveries relating to the Mortgage Loans, all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have the right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of a Trust
Estate occurs pursuant to the Pooling and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) Mortgage Loans and other
property then constituting the Trust Estate, and thereby effect early retirement
of the Certificates, on any Remittance Date when the aggregate outstanding Loan
Balances of the Mortgage Loans in the Trust Estate is 10% or less of the
original aggregate Loan Balance of the Mortgage Loans as of the Trust Estate
acquired on the Startup Date and acquired prior to the end of the Pre-Funding
Period and (ii) under certain



                                     A-R-3
<PAGE>   168


circumstances relating to the qualification of either the Upper-Tier REMIC or
the Lower-Tier REMIC as a REMIC under the Code the Mortgage Loans in the Trust
Estate may be sold, thereby effecting the early retirement of the Class R
Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register duly endorsed by, or accompanied by a written
instrument of transfer in the form required by the Pooling and Servicing
Agreement duly executed by, the Owner hereof or his attorney duly authorized in
writing, and thereupon one or more new Certificates of like Class, tenor and a
like aggregate fractional undivided interest in the Trust Estate will be issued
to the designated transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth, Class R Certificates are exchangeable
for new Class R Certificates evidencing the same Percentage Interest as the
Class R Certificates exchanged.

                  No service charge will be made for any such registration of
transfer or exchange, but the Trustee may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.






                                     A-R-4
<PAGE>   169


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed, pursuant to the provisions of the Pooling and Servicing
Agreement.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:







                                     A-R-5
<PAGE>   170


                                                                    EXHIBIT A-RL
                                                   FORM OF CLASS RL CERTIFICATES

                  TRANSFER OF THIS CLASS RL CERTIFICATE IS RESTRICTED AS SET
FORTH IN THE POOLING AND SERVICING AGREEMENT. NO TRANSFER OF THIS CLASS RL
CERTIFICATE MAY BE MADE TO A "DISQUALIFIED ORGANIZATION" AS DEFINED IN SECTION
860E(e)(5) OF THE CODE. SUCH TERM INCLUDES THE UNITED STATES, ANY STATE OR
POLITICAL SUBDIVISION THEREOF, ANY FOREIGN GOVERNMENT, ANY INTERNATIONAL
ORGANIZATION, ANY AGENCY OR INSTRUMENTALITY OF ANY OF THE FOREGOING (OTHER THAN
CERTAIN TAXABLE INSTRUMENTALITIES), ANY COOPERATIVE ORGANIZATION FURNISHING
ELECTRIC ENERGY OR PROVIDING THEREOF SERVICE TO PERSONS IN RURAL AREAS, OR ANY
ORGANIZATION (OTHER THAN A FARMERS' COOPERATIVE) THAT IS EXEMPT FROM FEDERAL
INCOME TAX UNLESS SUCH ORGANIZATION IS SUBJECT TO THE TAX ON UNRELATED BUSINESS
INCOME. NO TRANSFER OF THIS CLASS RL CERTIFICATE WILL BE REGISTERED BY THE
TRUSTEE UNLESS THE PROPOSED TRANSFEREE HAS DELIVERED AN AFFIDAVIT AFFIRMING,
AMONG OTHER THINGS, THAT THE PROPOSED TRANSFEREE IS NOT A DISQUALIFIED
ORGANIZATION AND IS NOT ACQUIRING THE CLASS RL CERTIFICATE FOR THE ACCOUNT OF A
DISQUALIFIED ORGANIZATION. A COPY OF THE FORM OF AFFIDAVIT REQUIRED OF EACH
PROPOSED TRANSFEREE IS ON FILE AND AVAILABLE FROM THE TRUSTEE.

                  A TRANSFER IN VIOLATION OF THE APPLICABLE RESTRICTIONS MAY
GIVE RISE TO A SUBSTANTIAL TAX UPON THE TRANSFEROR OR, IN CERTAIN CASES, UPON AN
AGENT ACTING FOR THE TRANSFEREE. A PASS-THROUGH ENTITY THAT HOLDS THIS CLASS RL
CERTIFICATE AND THAT HAS A DISQUALIFIED ORGANIZATION AS A RECORD OWNER IN ANY
TAXABLE YEAR GENERALLY WILL BE SUBJECT TO A TAX FOR EACH SUCH YEAR EQUAL TO THE
PRODUCT OF (A) THE AMOUNT OF EXCESS INCLUSIONS WITH RESPECT TO THE PORTION OF
THIS CERTIFICATE OWNED THROUGH SUCH PASS-THROUGH ENTITY BY SUCH DISQUALIFIED
ORGANIZATION AND (B) THE HIGHEST MARGINAL FEDERAL TAX RATE ON CORPORATIONS. FOR
PURPOSES OF THE PRECEDING SENTENCE, THE TERM "PASS-THROUGH" ENTITY INCLUDES
REGULATED INVESTMENT COMPANIES, REAL ESTATE INVESTMENT TRUSTS, COMMON TRUST
FUNDS, PARTNERSHIPS, TRUSTS, ESTATES, COOPERATIVES TO WHICH PART I OF SUBCHAPTER
1T OF THE CODE APPLIES AND, EXCEPT AS PROVIDED IN REGULATIONS, NOMINEES.

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.






                                     A-RL-1
<PAGE>   171


                  THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE
WITHOUT REGISTRATION THEREOF UNDER THE ACT MAY BE MADE ONLY IN A TRANSACTION
EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
PROVISIONS OF SECTION 5.8 OF THE POOLING AND SERVICING AGREEMENT REFERRED TO
HEREIN.


                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                                    CLASS RL


                  This Certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Corp., any Originator or any of their subsidiaries and
affiliates.

No:      RL-1                                              Date:  June 3, 1999
   ---------------                                              ----------------


Percentage Interest: 100%                                  May 25, 2029
                     ---                                   ------------
                                                           Final Scheduled
                                                           Payment Date

                             ---------------------
                                Registered Owner


                  This Certificate is one of a Class of duly authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Class RL
Certificates (the "Class RL Certificates") and issued under and subject to the
terms, provisions and conditions of the Pooling and Servicing Agreement, dated
as of May 1, 1999 (the "Pooling and Servicing Agreement"), by and among Advanta
Mortgage Conduit Services, Inc. (the "Sponsor"), Bankers Trust Company of
California (the "Trustee"), and Advanta Mortgage Corp. USA (the "Master
Servicer") to which Pooling and Servicing Agreement the Owner of this
Certificate by virtue of acceptance hereof assents and by which such Owner is
bound.

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date"), commencing June 25, 1999 to the persons in whose names the
Class RL Certificates are registered at the close of business on the last
business day of the calendar month immediately preceding the calendar month in
which such Payment Date occurs (the "Record Date"), the Trustee will distribute
to each Owner of the Class RL Certificates such Owner's Percentage Interest
multiplied by any amounts then available to be distributed to the Owners of the
Class RL Certificates. Distributions will be made in immediately available
funds, by wire transfer or otherwise, to the account of such Owner at a domestic
bank or other entity having appropriate facilities therefor, if such Owner has
so notified



                                     A-RL-2
<PAGE>   172


the Trustee at least five business days prior to the related record date, or by
check mailed to the address of the person entitled thereto as it appears on the
Register.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable state or local law by any Person from a distribution to
any Owner shall be considered as having been paid by the Trustee to such Owner
for all purposes of the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, the Sponsor, Advanta Mortgage Corp. USA, Advanta National
Bank, Advanta Bank Corp., Advanta Corp. or any of their subsidiaries and
affiliates and are not insured or guaranteed by the Federal Deposit Insurance
Corporation, the Government National Mortgage Association, or any other
governmental agency. This Certificate is limited in right of payment to certain
collections and recoveries relating to the Mortgage Loans, all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have the right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of a Trust
Estate occurs pursuant to the Pooling and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) Mortgage Loans and other
property then constituting the Trust Estate, and thereby effect early retirement
of the Certificates, on any Remittance Date when the aggregate outstanding Loan
Balances of the Mortgage Loans in the Trust Estate is 10% or less of the
original aggregate Loan Balance of the Mortgage Loans as of the Trust Estate
acquired on the Startup Date and acquired prior to the end of the Pre-Funding
Period and (ii) under certain



                                     A-RL-3
<PAGE>   173


circumstances relating to the qualification of either the Upper-Tier REMIC or
the Lower-Tier REMIC as a REMIC under the Code the Mortgage Loans in the Trust
Estate may be sold, thereby effecting the early retirement of the Class RL
Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register duly endorsed by, or accompanied by a written
instrument of transfer in the form required by the Pooling and Servicing
Agreement duly executed by, the Owner hereof or his attorney duly authorized in
writing, and thereupon one or more new Certificates of like Class, tenor and a
like aggregate fractional undivided interest in the Trust Estate will be issued
to the designated transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth, Class RL Certificates are exchangeable
for new Class RL Certificates evidencing the same Percentage Interest as the
Class RL Certificates exchanged.

                  No service charge will be made for any such registration of
transfer or exchange, but the Trustee may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.





                                     A-RL-4
<PAGE>   174


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed, pursuant to the provisions of the Pooling and Servicing
Agreement.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:



                                     A-RL-5
<PAGE>   175


                                                                     EXHIBIT A-S
                                            FORM OF SUPPLEMENTAL INTEREST RIGHTS

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.

                  THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE
WITHOUT REGISTRATION THEREOF UNDER THE ACT MAY BE MADE ONLY IN A TRANSACTION
EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
PROVISIONS OF SECTION 5.8 OF THE POOLING AND SERVICING AGREEMENT REFERRED TO
HEREIN.


                      SUPPLEMENTAL INTEREST PAYMENT ACCOUNT
                                   RELATING TO
                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                           SUPPLEMENTAL INTEREST RIGHT

                  This Certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., any Originator or any of their
subsidiaries and affiliates. This Certificate represents a right to receive
certain amounts held in the Supplemental Interest Payment Account described
herein.

Date:   June 3, 1999


Percentage Interest: 100%                                     May 25, 2029
                     ----                                     ------------
                                                              Final Scheduled
                                                              Payment Date

                    Bankers Trust Company Of California, N.A.
              on behalf of the Owners of the Class A-1 Certificates
              -----------------------------------------------------
                                Registered Owner

                  The registered Owner named above is the registered Owner of a
right to receive certain amounts held in the Supplemental Interest Payment
Account (the "Supplemental Interest Right") pursuant to that certain Pooling and
Servicing Agreement dated as of May 1, 1999 (the "Pooling and Servicing
Agreement") by and among the Sponsor, the Trustee and Advanta Mortgage Corp.
USA, as Master Servicer (the "Master Servicer").


                                     A-S-1
<PAGE>   176


                  This Certificate issued under and subject to the terms,
provisions and conditions of the Pooling and Servicing Agreement, to which
Pooling and Servicing Agreement the Owner of this Certificate by virtue of
acceptance hereof assents and by which such Owner is bound.

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date"), commencing June 25, 1999 to the persons in whose names the
Supplemental Interest Rights are registered at the close of business on the last
business day of the calendar month immediately preceding the calendar month in
which such Payment Date occurs (the "Record Date"), the Trustee will distribute
to each Owner of Supplemental Interest Rights such Owner's Percentage Interest
multiplied by any amounts then available to be distributed to the Owners of the
Supplemental Interest Rights. Distributions will be made in immediately
available funds, by wire transfer or otherwise, to the account of such Owner at
a domestic bank or other entity having appropriate facilities therefor, if such
Owner has so notified the Trustee at least five business days prior to the
related record date, or by check mailed to the address of the person entitled
thereto as it appears on the Register.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable state or local law by any Person from a distribution to
any Owner shall be considered as having been paid by the Trustee to such Owner
for all purposes of the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, the Sponsor, Advanta Mortgage Corp. USA, Advanta National
Bank, Advanta Bank Corp., Advanta Corp. or any of their subsidiaries and
affiliates and are not insured or guaranteed by the Federal Deposit Insurance
Corporation, the Government National Mortgage Association, or any other
governmental agency. This Certificate is limited in right of payment to certain
amounts held in the Supplemental Interest Payment Account all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have the right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.


                                     A-S-2
<PAGE>   177


                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Certificate Insurance Policy of all amounts held by the Trustee and required
to be paid to such Owners pursuant to the Pooling and Servicing Agreement upon
the later to occur of (a) the final payment or other liquidation (or any advance
made with respect thereto) of the last Mortgage Loan in the Trust Estate or (b)
the disposition of all property acquired in respect of any Mortgage Loan
remaining in the Trust Estate or (ii) at any time when a Qualified Liquidation
of a Trust Estate occurs pursuant to the Pooling and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) Mortgage Loans and other
property then constituting the Trust Estate, and thereby effect early retirement
of the Certificates, on any Remittance Date when the aggregate outstanding Loan
Balances of the Mortgage Loans in the Trust Estate is 10% or less of the
original aggregate Loan Balance of the Mortgage Loans in the Trust Estate
acquired on the Startup Date and acquired prior to the end of the Pre-Funding
Period and (ii) under certain circumstances relating to the qualification of the
REMIC Trust as a REMIC under the Code the Mortgage Loans in the Trust Estate may
be sold, thereby effecting the early retirement of the Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register duly endorsed by, or accompanied by a written
instrument of transfer in the form required by the Pooling and Servicing
Agreement duly executed by, the Owner hereof or his attorney duly authorized in
writing, and thereupon one or more new Certificates of like Class, tenor and a
like aggregate fractional undivided interest in certain amounts held in the
Supplemental Interest Payment Account will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.





                                     A-S-3
<PAGE>   178


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed, pursuant to the provisions of the Pooling and Servicing
Agreement.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:





                                     A-S-4
<PAGE>   179


                                                                     EXHIBIT A-B
                                                     FORM OF CLASS B CERTIFICATE

                  THIS CERTIFICATE IS SUBORDINATE TO THE CLASS A-1, CLASS A-2,
CLASS A-3, CLASS A-4, CLASS A-5, CLASS A-6 AND CLASS A-7 CERTIFICATES OF THIS
SERIES TO THE EXTENT DESCRIBED IN THE POOLING AND SERVICING AGREEMENT DESCRIBED
HEREIN.

                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                     MORTGAGE LOAN ASSET-BACKED CERTIFICATE
                       INTEREST-ONLY CLASS B CERTIFICATES
                              (Class B Certificate)

                     Comprised of a Certificate Representing
                     Certain Interests Relating to a Pool of
                                 Mortgage Loans
                       The Mortgage Loans are Serviced by

                 ADVANTA MORTGAGE CORP. USA, as Master Servicer

                  (This certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., an Originator or any of their
subsidiaries and affiliates. This certificate is comprised of a Certificate
representing (i) a fractional ownership interest in Group I and Group II
described herein, monies in certain Accounts created pursuant to the Pooling and
Servicing Agreement and certain other rights relating thereto and is payable
only from amounts received by the Trustee relating to the Mortgage Loans in
Group I and Group II held by the Trust and (ii) monies held in such Accounts.)

No.: B-1                                                    June 3, 1999
                                                            ------------
                                                            Date

Percentage Interest: 100%                                   May 25, 2029
                                                            ------------
                                                            Final Scheduled
                                                            Payment Date

             Bankers Trust Company of California, N.A., on behalf of
                   Advanta 1999-2 Supplemental Interest Trust
                   ------------------------------------------
                                Registered Owner


                  The registered Owner named above is the registered Owner of a
fractional interest in (i) a pool consisting of fixed rate mortgage loans (the
"Mortgage Loans") assigned to a particular mortgage loan group ("Group I") which
will be formed by Advanta Mortgage Conduit Services, Inc. ("Advanta" or the
"Sponsor"), a Delaware corporation and sold or caused to be sold by the Sponsor
to Bankers Trust Company of California, N.A., a national banking association, as
trustee (the "Trustee") on behalf of Advanta Mortgage Loan Trust 1999-2 (the
"Trust") pursuant to that certain Pooling and Servicing Agreement dated as of
May 1, 1999 (the "Pooling and Servicing Agreement") by and among the Sponsor,
the Trustee and Advanta



                                     A-B-1
<PAGE>   180


Mortgage Corp. USA, as Master Servicer (the "Master Servicer"), (ii) such
amounts in all Accounts including principal collected and accrued interest in
respect of the related Mortgage Loans on or after the Initial Cut-Off Date, each
Subsequent Cut-Off Date and each Replacement Cut-Off Date, including Eligible
Investments, as may from time to time may be held in such Accounts (except any
premium recapture and interest accrued prior to the Initial Cut-Off Date, each
Subsequent Cut-Off Date and each Replacement Cut-Off Date, as applicable and
except for net investment earnings on the Principal and Interest Account, the
Capitalized Interest Account and on the Certificate Account), (iii) any Property
relating to the Mortgage Loans in Group I, the ownership of which has been
effected on behalf of the Trust as a result of foreclosure or acceptance by the
Master Servicer of a deed in lieu of foreclosure and that has not been withdrawn
from the Trust, (iv) any Mortgage Insurance Policies relating to the Mortgage
Loans in Group I and any rights of the Sponsor under any Mortgage Insurance
Policies, (v) Net Liquidation Proceeds relating to the Mortgage Loans in Group
I, (vi) the rights of the Trustee under the Certificate Insurance Policy, and
(vii) the rights of the Sponsor against any Originator pursuant to the related
Master Transfer Agreement. Such Mortgage Loans in Group I and other amounts and
property enumerated above are hereinafter referred to as "Group I."

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  THIS CERTIFICATE HAS NOT BEEN REGISTERED OR QUALIFIED UNDER
THE SECURITIES ACT OF 1933 (THE "SECURITIES ACT") OR THE SECURITIES LAWS OF ANY
STATE. Any resale, transfer or other disposition of this certificate without
such registration or qualification may be made only in a transaction which does
not require such registration or qualification and in accordance with the
provisions of section 5.8 of the pooling and servicing agreement referred to
herein.

                  SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE
REPRESENTS AN INTEREST IN A CLASS OF "REGULAR INTERESTS" IN A "REAL ESTATE
MORTGAGE INVESTMENT CONDUIT" ("REMIC") AS THOSE TERMS ARE DEFINED, RESPECTIVELY,
IN SECTION 860G AND 860D OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE
"CODE"), ASSUMING COMPLIANCE WITH THE REMIC PROVISIONS (SECTIONS 860A THROUGH
860G) OF THE CODE.

                  THIS CERTIFICATE IS A PASS-THROUGH CERTIFICATE ONLY AND,
NOTWITHSTANDING REFERENCES HEREIN TO PRINCIPAL AND INTEREST, NO DEBT OF ANY
PERSON IS REPRESENTED HEREBY (OTHER THAN AS REQUIRED FOR FEDERAL INCOME TAX
PURPOSES).

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.


                                     A-B-2
<PAGE>   181


                  This Certificate is one of a Class of duly-authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Mortgage Loan
Asset-Backed Certificates, Class B Certificates (the "Class B Certificates") and
issued under and subject to the terms, provisions and conditions of the Pooling
and Servicing Agreement, to which Pooling and Servicing Agreement the Owner of
this Certificate by virtue of acceptance hereof assents and by which such Owner
is bound. Also issued under the Pooling and Servicing Agreement are Class A-1
Certificates; Class A-2 Certificates; Class A-3 Certificates; Class A-4
Certificates; Class A-5 Certificates; Class A-6 Certificates; Class A-7
Certificates; Class BS Certificates; Class R Certificates; Class RL
Certificates; and a Certificate representing the right to receive certain
supplemental interest amounts. All such Certificates are collectively referred
to as the "Certificates."

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month, or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date") commencing June 25, 1999, the Owners of the Class B Certificates
as of the close of business on the last business day of the calendar month
immediately preceding the calendar month in which such Payment Date occurs (the
"Record Date") will be entitled to receive the Class B Distribution Amount
relating to such Payment Date. Distributions will be made in immediately
available funds to such Owners, by wire transfer or otherwise, to the account of
an Owner at a domestic bank or other entity having appropriate facilities
therefor, if such Owner has so notified the Trustee at least five business days
prior to the related record date, or by check mailed to the address of the
person entitled thereto as it appears on the Register.

                  Each Owner of record of a Class B Certificate will be entitled
to receive such Owner's Percentage Interest in the amounts distributed on such
Payment Date to the Owners of the Class B Certificates. The Percentage Interest
of each Class B Certificate as of any date of determination will be equal to the
percentage set forth on such Class B Certificate.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable to any Owner shall be considered as having been paid by
the Trustee to such Owner for all purposes of the Pooling and Servicing
Agreement.

                  The Mortgage Loans will be serviced by the Master Servicer
pursuant to the Pooling and Servicing Agreement. The Pooling and Servicing
Agreement permits the Master Servicer to enter into Sub-Servicing Agreements
with certain institutions eligible for appointment as Sub-Servicers for the
servicing and administration of certain Mortgage Loans. No appointment of any
Sub-Servicer shall release the Master Servicer from any of its obligations under
the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, Advanta Mortgage Conduit Services, Inc., Advanta Mortgage
Corp. USA, Advanta National Bank, Advanta Bank Corp., Advanta Corp., any
Originator or any of their subsidiaries and affiliates and are not insured or
guaranteed by the Federal Deposit Insurance Corporation, the Government National
Mortgage Association, or any other governmental agency. This Certificate is
limited in right of payment to



                                     A-B-3
<PAGE>   182


certain collections and recoveries relating to the Mortgage Loans in Group I and
Group II and amounts on deposit in the Accounts (except as otherwise provided in
the Pooling and Servicing Agreement) all as more specifically set forth
hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have any right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such Certificate or to
institute suit for the enforcement of any such distribution, and such right
shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Insurance Policy of all amounts held by the Trustee and required to be paid
to such Owners pursuant to the Pooling and Servicing Agreement upon the later to
occur of (a) the final payment or other liquidation (or any advance made with
respect thereto) of the last Mortgage Loan in the Trust Estate or (b) the
disposition of all property acquired in respect of any Mortgage Loan remaining
in the Trust Estate or (ii) at any time when a Qualified Liquidation of the
Upper-Tier REMIC and the Lower-Tier REMIC is effected pursuant to the Pooling
and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) remaining Mortgage Loans
and other property then constituting the Trust Estate, and thereby effect early
retirement of the Class A Certificates, on any Remittance Date when the
aggregate outstanding Loan Balances of the Mortgage Loans in the Trust Estate is
10% or less of the original aggregate Loan Balance of the Mortgage Loans in the
Trust Estate acquired on the Startup Date and acquired prior to the end of the
Pre-Funding Period and (ii) under certain circumstances relating to the
qualification of either the Upper-Tier REMIC or the Lower-Tier REMIC as a REMIC
under the Code the Mortgage Loans may be sold, thereby affecting the early
retirement of the Class B Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.

                  The Owners of a majority of the Percentage Interests
represented by the Offered Certificates, upon compliance with the requirements
set forth in the Pooling and Servicing Agreement, have the right to exercise any
trust or power set forth in the Pooling and Servicing Agreement with respect to
the Certificates or the Trust Estate.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register, and thereupon one or more new Certificates of



                                     A-B-4
<PAGE>   183


like Class, tenor and a like Percentage Interest will be issued to the
designated transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class B Certificates are issuable only as registered
Certificates in minimum percentage interests of all interests in the Class B
Certificates. As provided in the Pooling and Servicing Agreement and subject to
certain limitations therein set forth, Class B Certificates are exchangeable for
new Class B Certificates of the same percentage interest as the Class B
Certificates exchanged.

                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.






                                     A-B-5
<PAGE>   184


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed on behalf of the Trust.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:





                                     A-B-6
<PAGE>   185


                                                                    EXHIBIT A-BS
                                                    FORM OF CLASS BS CERTIFICATE

                  THIS CERTIFICATE HAS NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "ACT"). ANY RESALE OR TRANSFER OF THIS CERTIFICATE
WITHOUT REGISTRATION THEREOF UNDER THE ACT MAY BE MADE ONLY IN A TRANSACTION
EXEMPT FROM THE REGISTRATION REQUIREMENTS OF THE ACT AND IN ACCORDANCE WITH THE
PROVISIONS OF SECTION 5.8 OF THE POOLING AND SERVICING AGREEMENT REFERRED TO
HEREIN.

                  NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
INSURED OR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
SAVINGS AND LOAN INSURANCE CORPORATION, THE GOVERNMENT NATIONAL MORTGAGE
ASSOCIATION OR ANY OTHER GOVERNMENTAL AGENCY.


                      SUPPLEMENTAL INTEREST PAYMENT ACCOUNT
                                   RELATING TO
                       ADVANTA MORTGAGE LOAN TRUST 1999-2
                                    CLASS BS

                  This Certificate does not represent an interest in, or an
obligation of, nor are the underlying Mortgage Loans insured or guaranteed by,
Advanta Mortgage Conduit Services, Inc., Advanta Mortgage Corp. USA, Advanta
National Bank, Advanta Bank Corp., Advanta Corp., any Originator or any of their
subsidiaries and affiliates. This Certificate represents a fractional ownership
interest in certain excess monies of the Supplemental Interest Payment Account
described herein.

No:  BS-                                    Date:   June 3, 1999


Percentage Interest:   ----%                                   May 25, 2029
                     -----------                               ------------
                                                               Final Scheduled
                                                               Payment Date

                                ----------------
                                Registered Owner

                  The registered Owner named above is the registered Owner of a
fractional interest in certain excess monies of the Supplemental Interest
Payment Account pursuant to that certain Pooling and Servicing Agreement dated
as of May 1, 1999 (the "Pooling and Servicing Agreement") by and among the
Sponsor, the Trustee and Advanta Mortgage Corp. USA, as Master Servicer (the
"Master Servicer").


                                     A-BS-1
<PAGE>   186


                  This Certificate is one of a Class of duly authorized
Certificates designated as Advanta Mortgage Loan Trust 1999-2, Class BS
Certificates (the "Class BS Certificates") and issued under and subject to the
terms, provisions and conditions of the Pooling and Servicing Agreement, to
which Pooling and Servicing Agreement the Owner of this Certificate by virtue of
acceptance hereof assents and by which such Owner is bound.

                  Terms capitalized herein and not otherwise defined herein
shall have the respective meanings set forth in the Pooling and Servicing
Agreement.

                  On the 25th day of each month or, if such day is not a
Business Day, then the next succeeding Business Day (each such day being a
"Payment Date"), commencing June 25, 1999 to the persons in whose names the
Class BS Certificates are registered at the close of business on the last
business day of the calendar month immediately preceding the calendar month in
which such Payment Date occurs (the "Record Date"), the Trustee will distribute
to each Owner of the Class BS Certificates such Owner's Percentage Interest
multiplied by any amounts then available to be distributed to the Owners of the
Class BS Certificates. Distributions will be made in immediately available
funds, by wire transfer or otherwise, to the account of such Owner at a domestic
bank or other entity having appropriate facilities therefor, if such Owner has
so notified the Trustee at least five business days prior to the related record
date, or by check mailed to the address of the person entitled thereto as it
appears on the Register.

                  Upon receiving the final distribution hereon, the Owner hereof
is required to send this Certificate to the Trustee. The Pooling and Servicing
Agreement provides that, in any event, upon the making of the final distribution
due on this Certificate, this Certificate shall be deemed cancelled for all
purposes under the Pooling and Servicing Agreement.

                  The Trustee is required to duly and punctually pay
distributions with respect to this Certificate in accordance with the terms
hereof and the Pooling and Servicing Agreement. Amounts properly withheld under
the Code or applicable state or local law by any Person from a distribution to
any Owner shall be considered as having been paid by the Trustee to such Owner
for all purposes of the Pooling and Servicing Agreement.

                  This Certificate does not represent a deposit or other
obligation of, or an interest in, nor are the underlying Mortgage Loans insured
or guaranteed by, the Sponsor, Advanta Mortgage Corp. USA, Advanta National
Bank, Advanta Bank Corp., Advanta Corp. or any of their subsidiaries and
affiliates and are not insured or guaranteed by the Federal Deposit Insurance
Corporation, the Government National Mortgage Association, or any other
governmental agency. This Certificate is limited in right of payment to certain
amounts held in the Supplemental Interest Payment Account, all as more
specifically set forth hereinabove and in the Pooling and Servicing Agreement.

                  No Owner shall have the right to institute any proceeding,
judicial or otherwise, with respect to the Pooling and Servicing Agreement, or
for the appointment of a receiver or trustee, or for any other remedy under the
Pooling and Servicing Agreement except in compliance with the terms thereof.

                  Notwithstanding any other provisions in the Pooling and
Servicing Agreement, the Owner of any Certificate shall have the right which is
absolute and unconditional to receive distributions to the extent provided in
the Pooling and Servicing Agreement with respect to such



                                     A-BS-2
<PAGE>   187


Certificate or to institute suit for the enforcement of any such distribution,
and such right shall not be impaired without the consent of such Owner.

                  The Pooling and Servicing Agreement provides that the
obligations created thereby will terminate upon the earlier of (i) the payment
to the Owners of all Certificates from amounts other than those available under
the Certificate Insurance Policy of all amounts held by the Trustee and required
to be paid to such Owners pursuant to the Pooling and Servicing Agreement upon
the later to occur of (a) the final payment or other liquidation (or any advance
made with respect thereto) of the last Mortgage Loan in the Trust Estate or (b)
the disposition of all property acquired in respect of any Mortgage Loan
remaining in the Trust Estate or (ii) at any time when a Qualified Liquidation
of a Trust Estate occurs pursuant to the Pooling and Servicing Agreement.

                  The Pooling and Servicing Agreement additionally provides that
(i) the Master Servicer or any Master Servicer Affiliate may at its option,
purchase from the Trust all (but not fewer than all) Mortgage Loans and other
property then constituting the Trust Estate, and thereby effect early retirement
of the Certificates, on any Remittance Date when the aggregate outstanding Loan
Balances of the Mortgage Loans in the Trust Estate is 10% or less of the
original aggregate Loan Balance of the Mortgage Loans in the Trust Estate
acquired on the Startup Date and acquired prior to the end of the Pre-Funding
Period and (ii) under certain circumstances relating to the qualification of
either the Lower-Tier REMIC or the Upper-Tier REMIC as a REMIC under the Code
the Mortgage Loans in the Trust Estate may be sold, thereby effecting the early
retirement of the Certificates.

                  The Trustee shall give written notice of termination of the
Pooling and Servicing Agreement to each Owner in the manner set forth therein.

                  As provided in the Pooling and Servicing Agreement and subject
to certain limitations therein set forth and referred to on the face hereof, the
transfer of this Certificate is registrable in the Register upon surrender of
this Certificate for registration of transfer at the office designated as the
location of the Register duly endorsed by, or accompanied by a written
instrument of transfer in the form required by the Pooling and Servicing
Agreement duly executed by, the Owner hereof or his attorney duly authorized in
writing, and thereupon one or more new Certificates of like Class, tenor and a
like aggregate fractional undivided interest in certain amounts held in the
Supplemental Interest Payment Account will be issued to the designated
transferee or transferees.

                  The Trustee is required to furnish certain information on each
Payment Date to the Owner of this Certificate, as more fully described in the
Pooling and Servicing Agreement.

                  The Class BS Certificates are issuable only as registered
Certificates. As provided in the Pooling and Servicing Agreement and subject to
certain limitations therein set forth, Class BS Certificates are exchangeable
for new Class BS Certificates evidencing the same Percentage Interest as the
Class BS Certificates exchanged.

                  No service charge will be made for any such registration of
transfer or exchange, but the Trustee may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith.



                                     A-BS-3
<PAGE>   188


                  The Trustee and any agent of the Trustee may treat the Person
in whose name this Certificate is registered as the owner hereof for all
purposes, and neither the Trustee or any such agent shall be affected by notice
to the contrary.








                                     A-BS-4
<PAGE>   189


                  IN WITNESS WHEREOF, the Trustee has caused this Certificate to
be duly executed, pursuant to the provisions of the Pooling and Servicing
Agreement.

                                                        BANKERS TRUST COMPANY OF
                                                        CALIFORNIA, N.A.,
                                                         as Trustee



                                                    By: ______________________
                                                        Name:
                                                        Title:



Trustee Authentication

    BANKERS TRUST COMPANY OF
    CALIFORNIA, N.A.,
     as Trustee


By: ______________________
    Name:
    Title:



                                     A-BS-5
<PAGE>   190

                                                                       EXHIBIT B



                       FORM OF NOTICE OF ESTABLISHMENT OF
                         PRINCIPAL AND INTEREST ACCOUNT


Bankers Trust Company
  of California, N.A.
Three Park Plaza, 16th Floor
Irvine, CA 92614

Attention:  Corporate Trust Administration

Ladies & Gentlemen:

                  In accordance with Section 8.8 of the Pooling and Servicing
Agreement dated as of May 1, 1999 between you, Advanta Mortgage Corp. USA, a
Delaware corporation ("AMCUSA"), and Advanta Mortgage Conduit Services, Inc.,
please be advised that AMCUSA, as master servicer, has established the Principal
and Interest Account in trust for Bankers Trust Company of California, N.A., as
Trustee, as follows:

BANK                                                  ACCOUNT NUMBER
- ----                                                  --------------
PNC                                                    86128-21463
Bank of America                                        14504-08663




                                                      Very truly yours,

                                                      ADVANTA MORTGAGE CORP. USA


                                                      By:
                                                          ----------------------
                                                          Name:  Michael Coco
                                                          Title: Vice President


Dated:  June 3, 1999



          [Evidence of Establishment of Principal and Interest Account]




                                      B-1
<PAGE>   191


                                    EXHIBIT C


                   FORM OF TRUSTEE'S ACKNOWLEDGMENT OF RECEIPT


                  Bankers Trust Company of California, N.A., a national banking
association, in its capacity as trustee (the "Trustee") under that certain
Pooling and Servicing Agreement dated as of May 1, 1999 (the "Pooling and
Servicing Agreement") by and among Advanta Mortgage Conduit Services, Inc., a
Delaware corporation, as sponsor (the "Sponsor"), Advanta Mortgage Corp. USA, a
Delaware corporation, as master servicer, and the Trustee, hereby acknowledges
receipt of the items delivered to it by the Sponsor with respect to the Mortgage
Loans listed on Schedule 1 of the Pooling and Servicing Agreement, except as set
forth on the exception report (the "Exception Report") attached hereto.

                  The Trustee hereby additionally acknowledges that it shall
review such items (i) to confirm that an original Note is contained in the file
within 10 Business Days after the Startup Day and (ii) as required by Section
3.6(a) of the Pooling and Servicing Agreement, during the period specified
therein, and shall otherwise comply with Section 3.6(b) of the Pooling and
Servicing Agreement as required thereby.

                                            BANKERS TRUST COMPANY OF CALIFORNIA,
                                              N.A., as Trustee



                                            By:
                                               ---------------------------------
                                               Name:
                                               Title:


Dated:
      -------------------



                                       C-1
<PAGE>   192



                                                           SCHEDULE TO EXHIBIT C

                                EXCEPTION REPORT








                                       C-2
<PAGE>   193


                                                                       EXHIBIT D

                              FORM OF CERTIFICATION

                  WHEREAS, the undersigned is an Authorized Officer of Bankers
Trust Company of California, N.A., a national banking association, acting in its
capacity as trustee (the "Trustee") of a certain pool of mortgage loans (the
"Pool") heretofore conveyed in trust to the Trustee, pursuant to that certain
Pooling and Servicing Agreement dated as of May 1, 1999 (the "Pooling and
Servicing Agreement") by and among Advanta Mortgage Conduit Services, Inc., a
Delaware corporation, as sponsor (the "Sponsor"), Advanta Mortgage Corp. USA, a
Delaware corporation, as Master Servicer, and the Trustee; and

                  WHEREAS, the Trustee is required, pursuant to Section 3.6(a)
of the Pooling and Servicing Agreement, to review the Files relating to the Pool
within a specified period following the Startup Day and to notify the Sponsor
promptly of any defects with respect to the Pool, and the Sponsor is required to
remedy such defects or take certain other action, all as set forth in Section
3.6(b) of the Pooling and Servicing Agreement; and

                  WHEREAS, Section 3.6(a) of the Pooling and Servicing Agreement
requires the Trustee to deliver this Certification upon the satisfaction of
certain conditions set forth therein.

                  NOW, THEREFORE, it has determined that all required documents
(or certified copies of documents listed in Section 3.5 of the Pooling and
Servicing Agreement) have been executed or received, and that such documents
relate to the Initial Mortgage Loans identified in the Schedules of Mortgage
Loans pursuant to Section 3.5(a) of the Pooling and Servicing Agreement or, in
the event that such documents have not been executed and received or do not so
relate to such Mortgage Loans, any remedial action by the Sponsor pursuant to
Section 3.6(b) of the Pooling and Servicing Agreement has been completed. The
Trustee makes no certification hereby, however, with respect to any intervening
assignments or assumption and modification agreements.


                                                BANKERS TRUST COMPANY
                                                OF CALIFORNIA, N.A.

                                                By:
                                                   ----------------------------
                                                   Name:
                                                   Title:





                                      D-1
<PAGE>   194


                                                                       EXHIBIT E

                             FORM OF DELIVERY ORDER


                                               ---------------------------(date)


Bankers Trust Company
  of California, N.A.
Three Park Plaza
16th Floor
Irvine, California 92714

Attention:  Corporate Trust Administration

Ladies and Gentlemen:

                  Pursuant to Article IV of the Pooling and Servicing Agreement,
dated as of May 1, 1999 (the "Pooling and Servicing Agreement") by and among
Advanta Mortgage Conduit Services, Inc., a Delaware corporation, as sponsor (the
"Sponsor"), Advanta Mortgage Corp. USA, as master servicer, and Bankers Trust
Company of California, N.A., as trustee, the Sponsor HEREBY CERTIFIES that all
conditions precedent to the issuance of Advanta Mortgage Loan Trust 1999-2,
Mortgage Loan Asset-Backed Certificates (the "Certificates"), HAVE BEEN
SATISFIED and HEREBY REQUESTS YOU TO AUTHENTICATE AND DELIVER said Certificates,
and to RELEASE said Certificates to the Owners thereof, or otherwise upon their
order.

                                                 Very truly yours,

                                                 ADVANTA MORTGAGE CONDUIT
                                                  SERVICES, INC.


                                                 By:
                                                     ---------------------------
                                                     Name:  Michael Coco
                                                     Title: Vice President




                                       E-1
<PAGE>   195


                                                                       EXHIBIT F

          FORM OF CLASS R AND CLASS RL TAX MATTERS TRANSFER CERTIFICATE

                                                      AFFIDAVIT PURSUANT TO
                                                      SECTION 860E(e) OF THE
                                                      INTERNAL REVENUE CODE OF
                                                      1986, AS AMENDED

STATE OF          )
                  )  ss:
COUNTY OF         )

                  [NAME OF OFFICER], being first duly sworn, deposes and says:

                  1. That he is [Title of Officer] of [Name of Investor] (the
"Investor"), a [savings institution] [corporation] duly organized and existing
under the laws of [the State of __________] [the United States], on behalf of
which he makes this affidavit.

                  2. That (i) the Investor is not a "disqualified organization"
and will not be a "disqualified organization" as of [date of transfer] (For this
purpose, a "disqualified organization" means the United States, any state or
political subdivision thereof, any foreign government, any international
organization, any agency or instrumentality of any of the foregoing (other than
certain taxable instrumentalities), any cooperative organization furnishing
electric energy or providing telephone service to persons in rural areas, or any
organization (other than a farmers' cooperative) that is exempt from federal
income tax unless such organization is subject to the tax on unrelated business
income); (ii) it is not acquiring the Class [R/RL] Certificates for the account
of disqualified organization; (iii) it consents to any amendment of the Pooling
and Servicing Agreement that shall be deemed necessary by the Trustee (upon
advice of counsel) to constitute a reasonable arrangement to ensure that the
Class [R/RL] Certificates will not be owned directly or indirectly by a
disqualified organization; and (iv) it will not transfer any such Class [R/RL]
Certificate unless (a) it has received from the transferee an affidavit in
substantially the same form as this affidavit containing these same four
representations and (b) as of the time of the transfer, it does not have actual
knowledge that such affidavit is false.

                  IN WITNESS WHEREOF, the Investor has caused this instrument to
be executed on its behalf, pursuant to authority of its Board of Directors, by
its [Title of Officer] and its corporate seal to be hereunto attached, attested
by its [Assistant] Secretary, this __ day of __________, ____.


                                                  [NAME OF INVESTOR]

                                                  By:
                                                     ---------------------------
                                                     [Name of Officer]
                                                     [Title of Officer]


                                                  [Corporate Seal]

                                                  Attest:


                                                     ---------------------------
                                                     [Assistant] Secretary


                                      F-1
<PAGE>   196


                  Personally appeared before me the above-named [Name of
Officer], known or proved to be the same person who executed the foregoing
instrument and to be the [Title of Officer] of the Investor, and acknowledged to
me that he executed the same as his free act and deed and the free act and deed
of the Investor.

                  Subscribed and sworn before me this ____ day of _______, ____.


                                  ---------------------------
                                  NOTARY PUBLIC

                                  COUNTY OF
                                          ------------------------

                                  STATE OF
                                          ------------------------

                    My commission expires the      day of                ,     .
                                              ----        ---------------  ----




                                      F-2
<PAGE>   197

                                                                       EXHIBIT G


                            SPECIAL POWER OF ATTORNEY

                  KNOW ALL MEN BY THESE PRESENTS, that I, _____________,
______________ of ________________ (the "Sponsor"), do hereby constitute and
appoint Bankers Trust Company of California, N.A., as the true and lawful
attorney, for the Sponsor and in its name, place and stead, to record the
assignments of mortgage with respect to the Mortgage Loans transferred to the
Bankers Trust Company of California, N.A., as trustee (the "Trustee"), under
that Pooling and Servicing Agreement dated as of May 1, 1999 by and among the
Sponsor, the Trustee and Advanta Mortgage Corp. USA, as master servicer, and to
do and perform all other things and acts relating to such assignments of
mortgage as may be necessary to effectuate the transfer of such Mortgage Loans
to the Trustee, including the execution and delivery of new assignments of
mortgage where necessary to comply with applicable real estate recording laws at
the time of recordation.

                  This power of attorney is irrevocable and is coupled with an
interest in the Mortgage Loans, and it may at all times be relied upon by any
person, firm or corporation dealing with the attorney named herein as remaining
in full force and effect, and such person, firm or corporation shall have no
liability to the Sponsor with respect thereto.

         WITNESS the following signature this     day of                 ,     .
                                              ----        ---------------  ----

                                            ----------------------
                                            By: ------------------
                                            Name: ----------------
                                            Title: ---------------

STATE OF PENNSYLVANIA
COUNTY OF MONTGOMERY

         I, _____________, a Notary Public in and for the jurisdiction
aforesaid, do hereby certify that _______________, who acknowledged himself to
the _______________ of _______________, a Delaware corporation, personally
appeared before me in the jurisdiction aforesaid and that he as such
______________ executed the foregoing instrument on behalf of said corporation
for the purposes therein contained.

         Witness my hand and official seal this _____ day of _________________.



                                                                 (SEAL)
                                            ---------------------
                                            Notary Public

                                            My Commission Expires:



                                       G-1



<PAGE>   198


                                                                       EXHIBIT H
                                                          FORM OF MONTHLY REPORT

                     Advanta Mortgage Conduit Services, Inc.
                     Mortgage Loan Asset-Backed Certificates
                                  Series 1999-2

                         Statement to Certificateholders

<TABLE>
<CAPTION>
                                          PRIOR                                                       CURRENT
                    ORIGINAL            PRINCIPAL                                                    PRINCIPAL
     CLASS         FACE VALUE            BALANCE         INTEREST        PRINCIPAL       TOTAL        BALANCE
- ---------------------------------------------------------------------------------------------------------------------
<S>                <C>                  <C>              <C>             <C>             <C>         <C>
A-1
A-2
A-3
A-4
A-5
A-6
A-7
B
BS
R
RL

- ---------------------------------------------------------------------------------------------------------------------
TOTALS
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>


FACTOR INFORMATION PER $1000 OF ORIGINAL FACE                 PASS-THROUGH RATES



<TABLE>
<CAPTION>
                               PRIOR                                                         CURRENT
                             PRINCIPAL                                                      PRINCIPAL
    CLASS        CUSIP        BALANCE         INTEREST       PRINCIPAL        TOTAL          BALANCE        CURRENT      NEXT
- -----------------------------------------------------------------------------------------------------------------------------
<S>              <C>         <C>              <C>            <C>              <C>           <C>             <C>          <C>
A-1
A-2
A-3
A-4
A-5
A-6
A-7
B
BS
R
RL

SPONSOR:    Advanta Mortgage Conduit Services, Inc.  ACCOUNT
SERVICER:   Advanta Mortgage Corp. USA               MANAGER:
                                                             -------------------------------

LEAD UNDERWRITER: Morgan Stanley & Co., Incorporated

RECORD DATE:
DISTRIBUTION DATE:
FACTOR INFORMATION:
</TABLE>



                                      H-1
<PAGE>   199


                     Advanta Mortgage Conduit Services, Inc.
                     Mortgage Loan Asset-Backed Certificates
                                  Series 1999-2

                         Statement to Certificateholders

AS TO EACH MORTGAGE LOAN GROUP

DISTRIBUTION DATE:

DELINQUENCY ADVANCES MADE:

ACCRUED SERVICING FEE FOR THE CURRENT PERIOD:

PLUS ADDITIONAL SERVICING FEES:

LESS PERMITTED REDUCTIONS TO SERVICING FEES:

TOTAL SERVICING FEES DUE MASTER SERVICER (INCLUDING MASTER SERVICING FEE):

COLLECTED SERVICING FEES FOR CURRENT PERIOD:



<TABLE>
<CAPTION>
                  Total Delinquency (Excluding Foreclosure &
                  REO, Including delinquent bankruptcies)                                    Loans in
                  ---------------------------------------                                    Foreclosure
                                                                                             (Including
                  30-59          60-89           90+                                         bankruptcies
                  Days           Days            Days           Total Delinquency            in F/C)
                  ----           ----            ----           -----------------            -------
<S>               <C>            <C>             <C>            <C>                          <C>
UPS-$
%-$

Loans-$
%-#
</TABLE>



BOOK VALUE AND LOAN NUMBER OF REO PROPERTY:

NUMBER OF LOANS AS OF THE CURRENT DISTRIBUTION DATE:

NUMBER OF LOANS AS OF THE NEXT DISTRIBUTION DATE:

WEIGHTED AVERAGE COUPON AS OF THE CURRENT DISTRIBUTION DATE:

WEIGHTED AVERAGE COUPON AS OF THE NEXT DISTRIBUTION DATE:



                                      H-2
<PAGE>   200


SUBSTITUTION AMOUNTS:

LOAN PURCHASE PRICES

                      Bankruptcy
                      Proceedings
                      -----------
                      Loans-#                UPB-$

Status
  Current
  Delinquent*
  Foreclosure*

Total

                      Modified Loans
                      --------------
                      Loans-#                UPB-$

Status
  Current
  Delinquent*
  Foreclosure*

Total

*  included in delinquency and foreclosure statistics above

CURTAILMENTS INCLUDED IN CURRENT DISTRIBUTION:

PREPAYMENTS IN FULL INCLUDED IN CURRENT DISTRIBUTION:

RECOVERIES OF PRINCIPAL INCLUDED IN CURRENT DISTRIBUTION:

CARRY-FORWARD AMOUNT:

AMOUNT OF OVERCOLLATERALIZATION INCREASE OR DECREASE WITH
RESPECT TO A MORTGAGE LOAN GROUP:

INFORMATION PURSUANT TO
SECTION 6049(d)(7)(C):

PROJECTED EXCESS SPREAD FOR MORTGAGE LOAN GROUP:

BALANCE OF LARGEST LOAN:


                                      H-3
<PAGE>   201


                                 TRUST ACTIVITY

                           CERTIFICATE ACCOUNT DEPOSIT

AS TO EACH MORTGAGE LOAN GROUP:

PROCEEDS OF LIQUIDATION OF TRUST ESTATE:

AMOUNT OF DEPOSIT IN THE CERTIFICATE ACCOUNT:

LOAN PURCHASE PRICE AMOUNTS:

SUBSTITUTION AMOUNT:

INVESTMENT EARNINGS:  ON CERT. ACCT.

MONTHLY REMITTANCE FOR EACH CLASS:

AMOUNT OF EXCESS SPREAD ALLOCABLE TO A GROUP USED TO COVER SHORTFALLS WITH
RESPECT TO ANOTHER GROUP:

AMOUNT WITHDRAWN FROM CERTIFICATE ACCOUNT
AND DEPOSITED IN THE EXPENSE ACCOUNT:

AMOUNT WITHDRAWN FROM CERTIFICATE ACCOUNT
AND DISTRIBUTED TO SUBORDINATED CERTIFICATES:


AMOUNT REMAINING IN CERTIFICATE ACCOUNT:

                                                                 PREMIUM AMOUNT:


                                      H-4
<PAGE>   202


                                                                       EXHIBIT I

                     FORM OF MASTER SERVICER'S TRUST RECEIPT

To:      Bankers Trust Company
         of California, N.A.
         Three Park Plaza
         16th Floor
         Irvine, California 92614

         Attn:  Corporate Trust

                                      Date:


                  In connection with the administration of the mortgage loans
held by you as Trustee under a certain Pooling and Servicing Agreement dated as
of May 1, 1999 and by and among Advanta Mortgage Corp. USA, as Master Servicer,
and you, as Trustee (the "Agreement"), the Master Servicer hereby requests a
release of the Mortgage File held by you as Trustee with respect to the
following described Mortgage Loan for the reason indicated below:

Mortgagor's Name:

Loan No.:

Reason for requesting file:

_______ 1.                Mortgage Loan paid in full.

                                   (The Master Servicer hereby certifies that
                                   all amounts received in connection with the
                                   loan have been or will be credited to the
                                   Certificate Account (whichever is applicable)
                                   pursuant to the Agreement.)

_______ 2.                Mortgage Loan repurchased pursuant to Section 3.3,
                          3.4, 3.6(b) or 8.10 of the Agreement.

                                   (The Master Servicer hereby certifies that
                                   the Loan Purchase Price has been or will be
                                   paid to the Certificate Account pursuant to
                                   the Agreement.)

_______ 3.                Mortgage Loan substituted.

                                   (The Master Servicer hereby certifies that a
                                   Qualified Replacement Mortgage has been or
                                   will be assigned and delivered to you along
                                   with the related Mortgage File pursuant to
                                   the Agreement.)

_______ 4.                The Mortgage Loan is being foreclosed.

_______ 5.                Other.  (Describe)


                                      I-1
<PAGE>   203


                  The undersigned acknowledges that the above File will be held
by the undersigned in accordance with the provisions of the Agreement and will
be returned to you, except if the Mortgage Loan has been paid in full, or
repurchased or substituted for by a Qualified Replacement Mortgage (in which
case the Mortgage File will be retained by us permanently) and except if the
Mortgage Loan is being foreclosed (in which case the Mortgage File will be
returned when no longer required by us for such purpose).

                  Capitalized terms used herein shall have the meanings ascribed
to them in the Agreement.

                                                  ADVANTA MORTGAGE CORP. USA



                                                  By
                                                     ---------------------------
                                                     Name:
                                                          ----------------------
                                                     Title:
                                                           ---------------------



                                      I-2
<PAGE>   204


                                                                       EXHIBIT J
                                           FORM OF SUBSEQUENT TRANSFER AGREEMENT


                         SUBSEQUENT TRANSFER AGREEMENT


                  Advanta Mortgage Conduit Services, Inc. (the "Sponsor") and
Bankers Trust Company of California, N.A. as Trustee of the Advanta Mortgage
Loan Trust 1999-2 (the "Trust"), pursuant to the Pooling and Servicing Agreement
dated as of May 1, 1999 among Advanta Mortgage Corp. USA as Master Servicer,
Advanta Mortgage Conduit Services, Inc., as Sponsor and Bankers Trust Company of
California, N.A., as Trustee (the "Pooling and Servicing Agreement"), hereby
confirm their understanding with respect to the acquisition by the Trust of
those Mortgage Loans listed on the attached Schedule of Mortgage Loans (the
"Subsequent Mortgage Loans").

                  Conveyance of Subsequent Mortgage Loans. The Sponsor does
hereby irrevocably transfer, assign, set over and otherwise convey to the Trust
and does hereby request or direct the Trust to acquire, without recourse (except
as otherwise explicitly provided for herein) all of its [and certain Warehouse
Trusts'] right, title and interest in and to the Subsequent Mortgage Loans
listed on the attached Schedule of Mortgage Loans, including specifically,
without limitation, the Mortgages, the Mortgage Files and all other documents,
materials and properties appurtenant thereto, including all principal collected
and interest accrued on or after the Subsequent Cut-Off Date and any related
Mortgage Insurance Policies relating thereto. The Sponsor shall deliver or cause
to be delivered the original Mortgage or mortgage assignment with evidence of
recording thereon (except as otherwise provided by the Pooling and Servicing
Agreement) and other required documentation in accordance with the terms set
forth in Section 3.8(b) of the Pooling and Servicing Agreement.

                  The costs relating to the delivery of the documents specified
in this Subsequent Transfer Agreement and the Pooling and Servicing Agreement
shall be borne by the Sponsor.

                  The Sponsor hereby affirms the representations and warranties
set forth in the Pooling and Servicing Agreement that relate to itself and to
the Subsequent Mortgage Loans as of the date hereof.

                  All terms and conditions of the Pooling and Servicing
Agreement are hereby ratified, confirmed and incorporated herein; provided that
in the event of any conflict, the provisions of this Subsequent Transfer
Agreement shall control over the conflicting provisions of the Pooling and
Servicing Agreement.

                                       J-1
<PAGE>   205


                  Terms and capitalized and not defined herein shall have their
respective meanings as set forth in the Pooling and Servicing Agreement.

                  IN WITNESS WHEREOF, the parties have executed this Subsequent
Transfer Agreement as of this ____ day of ____________, ______.



                                        ADVANTA MORTGAGE CONDUIT
                                        SERVICES, INC.,
                                        as Sponsor


                                        By:
                                           -------------------------------------
                                           Michael Coco
                                           Vice President


                                        ADVANTA MORTGAGE LOAN
                                        TRUST 1999-2
                                        By: Bankers Trust Company of
                                              California, N.A.,
                                              not in its individual capacity but
                                              solely as Trustee

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

Dated:

Attachments

A.       Addition Notice.
B.       Schedule of Mortgage Loans.
C.       Officer's Certificate.
D.       Trustee's Certificate.
E.       Conveyance Agreement.



                                       J-2
<PAGE>   206


EXHIBIT K
                                                     FORM OF LOST NOTE AFFIDAVIT

                             AFFIDAVIT OF LOST NOTE

Loan #                :                              Note Date:
Current Borrower(s)   :

I, ___________________, being duly sworn, do hereby state under oath that:

1. I, as [Title] of _________________ (the "Lender"), am authorized to make this
affidavit.

2.   The Lender is the payee under the mortgage note ("Note"). A mortgage/deed
     of trust ("Security Instrument") signed refers to the note made of even
     date. The security instrument is attached as Exhibit 1.

3.   The Lender is the lawful owner of the Note and has good title to the Note
     and has the right to convey good title thereto, and the Lender has not
     canceled, altered, assigned or hypothecated the Note except to the Sponsor
     and the Trustee.

4.   The Note was not located after a thorough and diligent search which
     consisted of the following actions:

         Searching of all servicing and collateral loan files
         Querying the loan servicing employees

5.   Attached hereto as Exhibit 1 is a true and correct copy of the Security
     Instruments with an original note endorsement in blank by Lender.

6.   This Affidavit is intended to be relied on by [Advanta entity], its
     successors, and assigns.

7.   Following the assignment of the Note to the Trustee, the Trustee will be
     entitled to enforce the Note pursuant to Section 3-309 of the Uniform
     Commercial Code.

Executed this ___ day of ______, 199_, on behalf of the Lender by:

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:



                                      K-1
<PAGE>   207


                  ON THIS ____ DAY OF ____________, 199_, BEFORE ME APPEARED
_____________________________, to me personally known, who being duly sworn did
say that he is the [Title] of ___________________________, and that said
Affidavit of Lost Note was signed and sealed in behalf of such corporation as
Lender and said __________________________ acknowledged this instrument to be
the free act and deed of said corporation.


              ____________________________________________________
               Notary Public in and for the State of ____________

My commission expires _____________________________________















                                      K-2

<PAGE>   1

                                                                     Exhibit 4.2


AMBAC                                        Ambac Assurance Corporation
                                             c/o CT Corporation
                                             44 East Mifflin Street,
                                             Madison, Wisconsin 53703
                                             Administrative Office:
CERTIFICATE GUARANTY INSURANCE POLICY        One State Street Plaza,
                                             New York, New York 10004
                                             Telephone: (212) 668-0340

Insured Obligations:  $517,500,000           Policy Number:  AB0263BE

Advanta Mortgage Loan Trust 1999-2,
Advanta Mortgage Loan Asset-Backed
Certificates, Series 1999-2, Class A-1,
Class A-2, Class A-3, Class A-4, Class A-5,
Class A-6 and Class A-7

                                             Premium: Calculated as set forth in
                                             Certificate Guaranty Insurance
                                             Policy Endorsement attached hereto
                                             and made a part hereof

AMBAC ASSURANCE CORPORATION (AMBAC) A Wisconsin Stock Insurance Company in
consideration of the payment of the premium and subject to the terms of this
Policy, hereby agrees unconditionally and irrevocably to pay to the Trustee for
the benefit of the Holders of the Insured Obligations, that portion of the
Insured Amounts which shall become Due for Payment but shall be unpaid by reason
of Nonpayment.

Ambac will make such payments to the Trustee from its own funds on the later of
(a) one (1) Business Day following notification to Ambac of Nonpayment or (b)
the Business Day on which the Insured Amounts are Due for Payment. Such payments
of principal or interest shall be made only upon presentation of an instrument
of assignment in form and substance satisfactory to Ambac, transferring to Ambac
all rights under such Insured Obligations to receive the principal of and
interest on the Insured Obligation. Ambac shall be subrogated to all the
Holders' rights to payment on the Insured Obligations to the extent of the
insurance disbursements so made. Once payments of the Insured Amounts have been
made to the Trustee, Ambac shall have no further obligation hereunder in respect
of such Insured Amounts.

In the event the Trustee for the Insured Obligations has notice that any payment
of principal or interest on an Insured Obligation which has become Due for
Payment and which is made to a Holder by or on behalf of the Trustee has been
deemed a preferential transfer and theretofore recovered from its Holder
pursuant to the United States Bankruptcy Code in accordance with a final,
nonappealable order of a court of competent jurisdiction, such Holder will be
entitled to payment from Ambac to the extent of such recovery if sufficient
funds are not otherwise available.

This Policy is noncancelable by Ambac for any reason, including failure to
receive payment of any premium due hereunder. The premium on this Policy is not
refundable for any reason. This Policy does not insure against loss of any
prepayment or other acceleration payment which at any time may become due in
respect of any Insured Obligation, other than at the sole option of Ambac, nor
against any risk other than Nonpayment, including failure of the Trustee to make
any payment due Holders of Insured Amounts.

To the fullest extent permitted by applicable law, Ambac hereby waives and
agrees not to assert any and all rights and defenses, to the extent such rights
and defenses may be available to Ambac, to avoid payment of its obligations
under this Policy in accordance with the express provisions hereof.

Any capitalized terms not defined herein shall have the meaning given such terms
in the endorsement attached hereto or in the Agreement.

In witness whereof, Ambac has caused this Policy to be affixed with its
corporate seal and to be signed by its duly authorized officers in facsimile to
become effective as their original signatures and binding upon Ambac by virtue
of the countersignature of its duly authorized representative.


/s/ P. Lassiter                                  /s/ Stephen D. Cooke
- ---------------                                  --------------------
President                                        Secretary

                                                 /s/ [Authorized Representative]
                                                 -------------------------------
Effective Date: June 3, 1999                     Authorized Representative

<PAGE>   1
                                                                     Exhibit 4.3


<PAGE>   2

                              CONVEYANCE AGREEMENT


                  Advanta Mortgage Corp. USA, Advanta Mortgage Corp.
Midatlantic, Advanta Mortgage Corp. Midatlantic II, Advanta Mortgage Corp.
Midwest, Advanta Mortgage Corp. Northeast, Advanta Finance Corp., Advanta Bank
Corp. and Advanta National Bank, (each, an "Affiliated Originator"), Advanta
Conduit Receivables, Inc., as an Affiliate, and Advanta Mortgage Conduit
Services, Inc., as Sponsor, pursuant to the Master Loan Transfer Agreement dated
as of May 1, 1999 among themselves and Bankers Trust Company of California, N.A.
as Trustee (the "Master Transfer Agreement"), hereby confirm their understanding
with respect to the conveyance by each Affiliated Originator, each Warehouse
Trust the Affiliate and the Sponsor of those Mortgage Loans listed on the
attached Schedule of Mortgage Loans (the "Transferred Mortgage Loans") to the
Sponsor.

                  Conveyance of Transferred Mortgage Loans. Each Affiliated
Originator, the Affiliate and the Sponsor, concurrently with the execution and
delivery of this Conveyance Agreement, does hereby irrevocably transfer, assign,
set over and otherwise convey, and does direct the Trustee to convey to the
Sponsor and/or the Advanta Mortgage Loan Trust, without recourse (except as
otherwise explicitly provided for herein) all of its right, title and interest
in and to the Transferred Mortgage Loans being conveyed by it, including
specifically, without limitation, the Mortgages (as such term is defined in the
"Advanta Pooling Agreement"), the Files and all other documents, materials and
properties appurtenant thereto and the Notes, including all accrued interest and
principal received by such Affiliated Originator on or with respect to such
Transferred Mortgage Loans on or after the related Cut-off Date, together with
all of its right, title and interest in and to the proceeds received on or after
the related Cut-off Date of any related Mortgage Insurance Policies.

                  If an Affiliated Originator cannot deliver the original
Mortgage or mortgage assignment with evidence of recording thereon concurrently
with the execution and delivery of this Conveyance Agreement solely because of a
delay caused by the public recording office where such original Mortgage or
mortgage assignment has been delivered for recordation, such Affiliated
Originator shall promptly deliver to the Trustee such original Mortgage or
mortgage assignment with evidence of recording indicated thereon upon receipt
thereof from the public recording official.

                  The costs relating to the delivery of the documents specified
in this Conveyance Agreement shall be borne by each Affiliated Originator.

                  The Affiliated Originators hereby make the Representations and
Warranties set forth in Section 5(b) of the Master Transfer Agreement with
respect to the Transferred Mortgage Loans.

                  The "Cut-off Date" with respect to such Transferred Mortgage
Loans shall be May 1, 1999.


<PAGE>   3

                  All terms and conditions of the Master Transfer Agreement are
hereby incorporated herein, provided that in the event of any conflict the
provisions of this Conveyance Agreement shall control over the conflicting
provisions of the Master Transfer Agreement.

                  For purposes of this Conveyance Agreement, the "Advanta
Pooling Agreement" is the Pooling and Servicing Agreement dated as of May 1,
1999 relating to Advanta Mortgage Loan Trust 1999-2.



<PAGE>   4



Dated: June 3, 1999

                              ADVANTA MORTGAGE CORP. USA
                              ADVANTA MORTGAGE CORP. MIDATLANTIC
                              ADVANTA MORTGAGE CORP. MIDATLANTIC II
                              ADVANTA MORTGAGE CORP. MIDWEST
                              ADVANTA MORTGAGE CORP. NORTHEAST
                              ADVANTA NATIONAL BANK,
                                    as Affiliated Originators

                                    and

                              ADVANTA CONDUIT RECEIVABLES, INC.,
                              as an Affiliate


                              By:/s/ Michael Coco
                                 --------------------------------------
                                   Name:      Michael Coco
                                   Title:     Vice President

                              ADVANTA MORTGAGE CONDUIT
                              SERVICES, INC., as Sponsor


                              By:/s/ Michael Coco
                                 --------------------------------------
                                   Name:      Michael Coco
                                   Title:     Vice President

                              ADVANTA FINANCE CORP.


                              By: /s/ Michael Coco
                                 --------------------------------------
                                   Name:      Michael Coco
                                   Title:     Vice President

                              ADVANTA BANK CORP.,
                              as an affiliated Originator


                              By:/s/ John L. Richards
                                 --------------------------------------
                                   Name:      John L. Richards
                                   Title:     President and CEO


                              Conveyance Agreement


<PAGE>   5



                              BANKERS TRUST COMPANY
                              OF CALIFORNIA, N.A., as Trustee


                              By: /s/ Mark McNeill
                                 --------------------------------------
                                    Name:      Mark McNeill
                                    Title:     Assistant Secretary














                             [Conveyance Agreement]

<PAGE>   1
                                                                     Exhibit 4.4



<PAGE>   2

                                                                  Execution Copy





- --------------------------------------------------------------------------------


                         MASTER LOAN TRANSFER AGREEMENT

                             Dated as of May 1, 1999

                                  by and among

                           ADVANTA MORTGAGE CORP. USA
                       ADVANTA MORTGAGE CORP. MIDATLANTIC
                      ADVANTA MORTGAGE CORP. MIDATLANTIC II
                         ADVANTA MORTGAGE CORP. MIDWEST

                        ADVANTA MORTGAGE CORP. NORTHEAST
                              ADVANTA NATIONAL BANK
                               ADVANTA BANK CORP.
                             ADVANTA FINANCE CORP.,
                            as Affiliated Originators

                        ADVANTA CONDUIT RECEIVABLES, INC.
                                 as an Affiliate

                   BANKERS TRUST COMPANY OF CALIFORNIA, N.A.,
                                   as Trustee

                                       and

                    ADVANTA MORTGAGE CONDUIT SERVICES, INC.,
                                   as Sponsor


- --------------------------------------------------------------------------------



<PAGE>   3



                                TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                                                                      Page
                                                                                                      ----



<S>                 <C>                                                                               <C>
Section 1.          Definitions..........................................................................1


Section 2.          Interest Calculations................................................................3


Section 3.          Transfers of Mortgage Loans..........................................................3


Section 4.          Representations, Warranties and Covenants Regarding the
                    Affiliated Originators and the Sponsor...............................................3


Section 5.          Representations and Warranties of the Affiliated Originators
                    Regarding the Mortgage Loans ........................................................8


Section 6.          Authorized Representatives..........................................................14


Section 7.          Notices.............................................................................14


Section 8.          Governing Law.......................................................................15


Section 9.          Assignment..........................................................................15


Section 10.         Counterparts........................................................................15


Section 11.         Amendment...........................................................................15


Section 12.         Severability of Provisions..........................................................15


Section 13.         No Agency; No Partnership or Joint Venture..........................................15


Section 14.         Further Assurances..................................................................15


Section 15.         The Certificate Insurer.............................................................15


Section 16.         Maintenance of Records..............................................................16
</TABLE>





                                        i
<PAGE>   4




                  THIS MASTER LOAN TRANSFER AGREEMENT, dated as of May 1, 1999,
between Advanta Mortgage Corp. USA, Advanta Mortgage Corp. Midatlantic, Advanta
Mortgage Corp. Midatlantic II, Advanta Mortgage Corp. Midwest, Advanta Mortgage
Corp. Northeast, Advanta Mortgage Conduit Services, Inc., Advanta Finance Corp.,
Advanta Bank Corp. and Advanta National Bank, each a seller (each an "Affiliated
Originator" and collectively, the "Affiliated Originators"), Advanta Conduit
Receivables, Inc. (the "Affiliate"), Bankers Trust Company of California, N.A.,
as trustee ("Trustee") and Advanta Mortgage Conduit Services, Inc., as sponsor
("Sponsor");

I.       BACKGROUND

         A. Each Affiliated Originator is an originator or purchaser of mortgage
loans which such Affiliated Originator may, from time to time, convey to a
Warehouse Trust;

         B. The Affiliated Originators and the Sponsor expect, from time to
time, to cause such mortgage loans to be conveyed to the Advanta Trust in
connection with a securitization transaction sponsored by the Sponsor.

                  NOW, THEREFORE, in consideration of the foregoing and the
mutual agreements herein contained, the parties hereto hereby agree as follows:

                  Section 1. Definitions. Whenever used in this Agreement or in
any Conveyance Agreement, the following words and phrases, unless the context
otherwise requires, shall have the meanings specified in this Section; provided,
however, that any capitalized terms used herein or in any Conveyance Agreement
and not defined herein shall have their respective meanings as set forth in the
Advanta Pooling Agreement.

                  Advanta Pooling Agreement: The Pooling and Servicing Agreement
dated as of May 1, 1999, by and among Advanta Mortgage Conduit Services, Inc. as
Sponsor, Advanta Mortgage Corp. USA, as Master Servicer and Bankers Trust
Company of California, N.A., as Trustee.

                  Advanta Trust: The Advanta Mortgage Loan Trust 1999-2.

                  Agreement: This Master Loan Transfer Agreement as it may be
amended from time to time, including the exhibits and supplements hereto.

                  Bulk Acquisition Loan: Any Mortgage Loan purchased by an
Affiliated Originator from an Unaffiliated Originator as part of a bulk
portfolio acquisition.

                  Conveyance Agreement: Any conveyance agreement relating to a
Mortgage Pool, in substantially the form set forth as Exhibit A hereto.

                  Coupon Rate: The rate of interest borne by each Note.


<PAGE>   5

                  Cut-Off Date: With respect to any Mortgage Pool, the date
defined as such defined in the related Conveyance Agreement.

                  FDIC: The Federal Deposit Insurance Corporation, or any
successor thereto.

                  FHLMC: The Federal Home Loan Mortgage Corporation, a corporate
instrumentality of the United States created pursuant to the Emergency Home
Finance Act of 1970, as amended, or any successor thereof.

                  First Mortgage Loan: A Mortgage Loan which constitutes a first
priority mortgage lien with respect to any Mortgaged Property.

                  FNMA: The Federal National Mortgage Association, a
federally-chartered and privately-owned corporation existing under the Federal
National Mortgage Association Charter Act, as amended, or any successor thereof.

                  Junior Mortgage Loan: A Mortgage Loan which constitutes a
junior priority mortgage lien with respect to the related Mortgaged Property.

                  Loan Balance: With respect to each Mortgage Loan, the
outstanding principal balance thereof on the related Cut-Off Date, less any
related payments of principal relating to such Mortgage Loan that were
transferred by the Master Servicer or any Sub-Servicer to the Trustee for
deposit in the Certificate Account.

                  Master Servicer: Advanta Mortgage Corp. USA, a Delaware
corporation, and its permitted successors and assigns.

                  Mortgage File: The documents delivered to the Trustee pursuant
to the document delivery provisions of the Advanta Pooling Agreement pertaining
to a particular Mortgage Loan, together with any additional documents required
to be added to the Mortgage File pursuant to the Advanta Pooling Agreement.

                  Mortgage Loans: Each of the mortgage loans subject hereto,
together with any Qualified Replacement Mortgages substituted therefor in
accordance with the Advanta Pooling Agreement.

                  Mortgage Pool: Any group of Mortgage Loans transferred to the
Sponsor and/or to the Advanta Trust pursuant to a specific Conveyance Agreement.

                  Mortgaged Property: The underlying Mortgaged Property securing
a Mortgage Loan.

                  Note: The note or other evidence of indebtedness evidencing
the indebtedness of a Mortgagor under a Mortgage Loan.

                  Offered Certificates: The Class A Certificates issued by the
Advanta Trust.



                                       2
<PAGE>   6

                  Person: Any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.

                  Qualified Mortgage: "Qualified Mortgage" shall have the
meaning set forth from time to time in the definition thereof at Section
860G(a)(3) of the Code (or any successor statute thereto) and applicable to the
Advanta Trust.

                  Schedule of Mortgage Loans: The Schedule of Mortgage Loans
required to be delivered pursuant to the Advanta Pooling Agreement.

                  Trustee: Bankers Trust Company of California, N.A., located on
the date of execution of this Agreement at 3 Park Plaza, Irvine, California
92614, a national banking association, not in its individual capacity but solely
as Trustee, and any successor hereunder.

                  Unaffiliated Originator Loan: Any Mortgage Loan purchased by
an Affiliated Originator from an Unaffiliated Originator.

                  Unaffiliated Originators: Any Originator not affiliated with
the Sponsor.

                  Warehouse Trust: Any trust established by the Sponsor or an
affiliate of the Sponsor to finance the origination of mortgage loans.

                  Section 2. Interest Calculations. Calculations of interest
hereunder, including, without limitation, calculations of interest at the Coupon
Rate, which are made in respect of the Loan Balance of a Mortgage Loan shall be
made on a daily basis using any of the following (i) a 360-day year comprised of
twelve 30-day months, (ii) a 360-day year and the actual number of days elapsed
in the applicable interest period, or (iii) a 365-day year and the actual number
of days elapsed in the applicable interest period, as specified in the related
Note.

                  Section 3. Transfers of Mortgage Loans. From time to time the
Affiliated Originators and the Sponsor, intend to transfer Mortgage Loans to the
Sponsor pursuant to a Conveyance Agreement in substantially the form of Exhibit
A hereto. The Sponsor will then transfer the Mortgage Loans to the Advanta
Trust.

                  Section 4. Representations, Warranties and Covenants Regarding
the Affiliated Originators and the Sponsor. (a) Each Affiliated Originator
hereby represents and warrants to the Sponsor, the Trustee and their respective
successors and assigns that, as of the date hereof;

                  (i) Such Affiliated Originator is a corporation (or, in the
         case of Advanta National Bank USA, a national banking association, and,
         in the case of Advanta Bank Corp., a Utah industrial loan corporation)
         duly organized, validly existing and in good standing under the laws
         governing its creation and existence and is in good standing as a
         foreign corporation in each jurisdiction in which the nature of its
         business, or the properties owned or leased by it make such



                                       3
<PAGE>   7

         qualification necessary. Each Affiliated Originator has all requisite
         corporate power and authority to own and operate its properties, to
         carry out its business as presently conducted and as proposed to be
         conducted, to enter into and discharge its obligations under this
         Agreement and the Conveyance Agreements.

                  (ii) The execution and delivery of this Agreement by each
         Affiliated Originator and its performance and compliance with the terms
         of this Agreement and the Conveyance Agreements to which it is a party
         have been duly authorized by all necessary corporate action on the part
         of such Affiliated Originator and will not violate such Affiliated
         Originator's Articles of Incorporation, Articles of Association or
         Bylaws or constitute a default (or an event which, with notice or lapse
         of time, or both, would constitute a default) under, or result in a
         breach of, any material contract, agreement or other instrument to
         which such Affiliated Originator or its properties is a party or by
         which such Affiliated Originator is bound or violate any statute or any
         order, rule or regulation of any court, governmental agency or body or
         other tribunal having jurisdiction over such Affiliated Originator or
         any of its properties.

                  (iii) This Agreement and the Conveyance Agreements to which
         such Affiliated Originator is a party, assuming due authorization,
         execution and delivery by the other parties hereto and thereto, each
         constitutes a valid, legal and binding obligation of such Affiliated
         Originator, enforceable against it in accordance with the terms hereof,
         except as the enforcement thereof may be limited by applicable
         bankruptcy, insolvency, reorganization, moratorium or other similar
         laws affecting creditors' rights generally and by general principles of
         equity (whether considered in a proceeding or action in equity or at
         law).

                  (iv) Such Affiliated Originator is not in default with respect
         to any order or decree of any court or any order, regulation or demand
         of any federal, state, municipal or governmental agency, which might
         have consequences that would materially and adversely affect the
         condition (financial or other) or operations of such Affiliated
         Originator or its properties, or might have consequences that would
         materially and adversely affect its performance hereunder and under the
         Conveyance Agreements to which such Affiliated Originator is a party,
         or which would draw into question the validity of this Agreement or the
         Mortgage Loans taken as a whole or of any action taken or to be taken
         in connection with the obligations of the Affiliated Originator
         contemplated herein.

                  (v) No litigation is pending or, to the best of such
         Affiliated Originator's knowledge, threatened against such Affiliated
         Originator which litigation might have consequences that would prohibit
         its entering into this Agreement or any Conveyance Agreements to which
         it is a party or might have consequences that would materially and
         adversely affect its performance hereunder and under the Conveyance
         Agreements to which such Affiliated Originator is a party.



                                       4
<PAGE>   8

                  (vi) Neither this Agreement nor any certificate of an officer,
         statement furnished in writing or report delivered pursuant to the
         terms hereof by such Affiliated Originator contains any untrue
         statement of a material fact or omits to state any material fact
         necessary to make the certificate, statement or report not misleading.

                  (vii) Upon the receipt of each Mortgage Loan and other items
         of the Mortgage Files by the Trustee under this Agreement, the Advanta
         Trust will have good and marketable title to such Mortgage Loan and
         such other items of the Mortgage File free and clear of any lien (other
         than liens which will be simultaneously released).

                  (viii) Neither such Affiliated Originator nor any affiliate
         thereof will report on any financial statement any part of the
         Servicing Fee as an adjustment to the sales price of the Mortgage
         Loans.

                  (ix) All actions, approvals, consents, waivers, exemptions,
         variances, franchises, orders, permits, authorizations, rights and
         licenses required to be taken, given or obtained, as the case may be,
         by or from any federal, state or other governmental authority or agency
         (other than any such actions, approvals, etc., under any state
         securities laws, real estate syndication or "Blue Sky" statutes, as to
         which such Affiliated Originator makes no such representation or
         warranty), that are necessary or advisable in connection with the sale
         of the Mortgage Loans and the execution and delivery by such Affiliated
         Originator of this Agreement and the Conveyance Agreements to which it
         is a party, have been duly taken, given or obtained, as the case may
         be, are in full force and effect on the date hereof, are not subject to
         any pending proceedings or appeals (administrative, judicial or
         otherwise) and either the time within which any appeal therefrom may be
         taken or review thereof may be obtained has expired or no review
         thereof may be obtained or appeal therefrom taken, and are adequate to
         authorize the consummation of the transactions contemplated by this
         Agreement and the Conveyance Agreements on the part of such Affiliated
         Originator and the performance by such Affiliated Originator of its
         obligations under this Agreement and such of the Conveyance Agreements
         to which it is a party.

                  (x) The origination practices used by such Affiliated
         Originator with respect to the Mortgage Loans have been, (i) in all
         material respects, legal, proper, prudent and customary in the mortgage
         loan lending business and (ii) in compliance with the Master Servicer's
         underwriting criteria as described in the Prospectus.

                  (xi) The transactions contemplated by this Agreement are in
         the ordinary course of business of such Affiliated Originator. The
         transfer, assignment and conveyance of the Mortgage Notes and the
         Mortgages by the Master Servicer pursuant to this Agreement are not
         subject to the bulk transfer laws or any similar statutory provisions
         in effect in any applicable jurisdiction.



                                       5
<PAGE>   9

                  (xii) Such Affiliated Originator received fair consideration
         and reasonably equivalent value in exchange for the sale of the
         interests in the Mortgage Loans.

                  (xiii) Such Affiliated Originator did not sell any interest in
         any Mortgage Loan with any intent to hinder, delay or defraud any of
         its respective creditors.

                  (xiv) Such Affiliated Originator is solvent, and such
         Affiliated Originator will not be rendered insolvent as a result of the
         sale of the Mortgage Loans to the Advanta Trust.

The representations and warranties set forth in this paragraph (a) shall survive
the sale and assignment of the Mortgage Loans to the Sponsor.

                  In addition, each Affiliated Originator hereby covenants to
perform the obligations, if any, imposed upon it by the Advanta Pooling
Agreement.

                  (b) The Sponsor hereby represents and warrants to each
Affiliated Originator and the Trustee that, as of the date hereof:

                  (i) The Sponsor is a corporation duly organized, validly
         existing and in good standing under the laws of the State of Delaware
         and has all licenses and qualifications necessary to carry on its
         business as now being conducted and to perform its obligations
         hereunder; the Sponsor has the power and authority to execute and
         deliver this Agreement and to perform its obligations in accordance
         herewith; the execution, delivery and performance of this Agreement
         (including any Conveyance Agreement and any other instruments of
         transfer to be delivered pursuant to this Agreement) by the Sponsor and
         the consummation of the transactions contemplated hereby have been duly
         and validly authorized by all necessary corporate action and do not
         violate the organization documents of the Sponsor, contravene or
         violate any law, regulation, rule, order, judgement or decree to which
         the Sponsor or its properties are subject or contravene, violate or
         result in any breach of any provision of, or constitute a default
         under, or result in the imposition of any lien on any assets of the
         Sponsor pursuant to the provisions of, any mortgage, indenture,
         contract, agreement or other undertaking to which the Sponsor is a
         party or which purports to be binding upon Sponsor or any of Sponsor's
         assets; this Agreement evidences the valid and binding obligation of
         the Sponsor enforceable against the Sponsor in accordance with its
         terms, subject to the effect of bankruptcy, insolvency, reorganization,
         moratorium and other similar laws relating to or affecting creditor's
         rights generally or the application of equitable principles in any
         proceeding, whether at law or in equity;

                  (ii) All actions, approvals, consents, waivers, exemptions,
         variances, franchises, orders, permits, authorizations, rights and
         licenses required to be taken, given or obtained, as the case may be,
         by or from any federal, state or



                                       6
<PAGE>   10

         other governmental authority or agency, that are necessary in
         connection with the execution and delivery by the Sponsor of this
         Agreement, have been duly taken, given or obtained, as the case may be,
         are in full force and effect, are not subject to any pending
         proceedings or appeals (administrative, judicial or otherwise) and
         either the time within which any appeal therefrom may be taken or
         review thereof may be obtained has expired or no review thereof may be
         obtained or appeal therefrom taken, and are adequate to authorize the
         consummation of the transactions contemplated by this Agreement on the
         part of the Sponsor and the performance by the Sponsor of its
         obligations under this Agreement;

                  (iii) There is no action, suit, proceeding or investigation
         pending or, to the best of the Sponsor's knowledge, threatened against
         the Sponsor which, either in any one instance or in the aggregate, may
         result in any material adverse change in the business, operations,
         financial condition, properties or assets of the Sponsor or in any
         material impairment of the right or ability of the Sponsor to carry on
         its business substantially as now conducted, or in any material
         liability on the part of the Sponsor or which would draw into question
         the validity of this Agreement or of any action taken or to be taken in
         connection with the obligations of the Sponsor contemplated herein, or
         which would be likely to impair the ability of the Sponsor to perform
         under the terms of this Agreement; and

                  (iv) The Sponsor has the right to cause or request the
         transfer of the Mortgage Loans subject to a Warehouse Trust to the
         Advanta Trust or to direct or request the Advanta Trust to acquire such
         Mortgage Loans.

The representations and warranties set forth in this paragraph (b) shall survive
the sale and assignment of the Mortgage Loans to the Sponsor. Upon discovery of
a breach of any of the foregoing representations and warranties which materially
and adversely affects the interests of the Affiliated Originator, the Affiliated
Originator shall give prompt written notice to the Sponsor. Within 30 days of
its receipt of notice of breach, the Sponsor shall cure such breach in all
material respects.




                                       7
<PAGE>   11

                  Section 5. Representations and Warranties of the Affiliated
Originators Regarding the Mortgage Loans. (a) Set forth in paragraph (b) below
is a listing of representations and warranties which will be deemed to have been
made by each Affiliated Originator in connection with the Mortgage Loans such
Affiliated Originator will convey to the Sponsor and/or the Advanta Trust. In
addition, a Conveyance Agreement may, with respect to the Mortgage Loans in the
related Mortgage Pool, delete or modify any of such representations and
warranties, or may add additional representations and warranties ("Additional
Representations and Warranties"). The representations and warranties listed in
paragraph (b) below, together with any Additional Representations and
Warranties, are the "Representations and Warranties". Reference to the Cut-Off
Date is as of the Cut-Off Date set forth in the related Conveyance Agreement
with respect to a Mortgage Loan.

                  (b) With respect to each Mortgage Loan, each Affiliated
Originator hereby represents, warrants and covenants to the Sponsor and the
Trustee, as of the related Cut-Off Date, as follows, on which representations,
warranties and covenants the Trustee relies in accepting the Mortgage Loans,
with respect to the Mortgage Loans conveyed by such Affiliated Originator:

                  (i) The information with respect to each Mortgage Loan set
         forth in the Schedule of Mortgage Loans is true and correct;

                  (ii) All of the original or certified documentation required
         to be delivered to the Trustee pursuant to the Advanta Pooling
         Agreement (including all material documents related thereto) with
         respect to each Mortgage Loan has been or will be delivered to the
         Trustee in accordance with the terms of the Advanta Pooling Agreement.
         Each of the documents and instruments specified to be included therein
         has been duly executed and is in due and proper form, and each such
         document or instrument is in a form generally acceptable to prudent
         mortgage lenders that regularly originate or purchase mortgage loans
         comparable to the Mortgage Loans for sale to prudent investors in the
         secondary market that invest in mortgage loans such as the Mortgage
         Loans.

                  (iii) Each Mortgage Loan being transferred to the Sponsor is a
         Qualified Mortgage;

                  (iv) Each Mortgaged Property is improved by a single
         (one-to-four) family residential dwelling, which may include
         manufactured homes which qualify as eligible for inclusion in a REMIC,
         condominiums and townhouses; provided, however, that no more than 10.0%
         by aggregate principal balance of the Mortgage Loans as of the Initial
         Cut-Off Date are leasehold mortgages;

                  (v) No Mortgage Loan had a Combined Loan-to-Value Ratio in
         excess of 100%;

                  (vi) Each Mortgage is either a valid and subsisting first,
         second or third lien of record on the Mortgaged Property (subject in
         the case of any



                                       8
<PAGE>   12

         Junior Mortgage Loan only to a Senior Lien on such Mortgaged Property)
         and subject in all cases to the exceptions to title set forth in the
         title insurance policy, with respect to the related Mortgage Loan,
         which exceptions are generally acceptable to banking institutions in
         connection with their regular mortgage lending activities, and such
         other exceptions to which similar properties are commonly subject and
         which do not individually, or in the aggregate, materially and
         adversely affect the benefits of the security intended to be provided
         by such Mortgage;

                  (vii) Immediately prior to the transfer and assignment herein
         contemplated, each Affiliated Originator and each Warehouse Trust held
         good and indefeasible title to, and was the sole owner of, each
         Mortgage Loan conveyed by such Affiliated Originator or such Warehouse
         Trust, as applicable, subject to no liens, charges, mortgages,
         encumbrances or rights of others except liens which will be released
         simultaneously with such transfer and assignment; and immediately upon
         the transfer and assignment herein contemplated, the Trustee will hold
         good and indefeasible title to, and be the sole owner of, each Mortgage
         Loan subject to no liens, charges, mortgages, encumbrances or rights of
         others except liens which will be released simultaneously with such
         transfer and assignment;

                  (viii) No Mortgage Loans are 30 or more days Delinquent as of
         the Cut-Off Date, except for any portion of the Mortgage Loans which
         the Advanta Pooling Agreement so permits;

                  (ix) To the best knowledge of such Affiliated Originator,
         there is no delinquent tax or assessment lien or mechanic's lien on any
         Mortgaged Property, and each Mortgaged Property is free of substantial
         damage and is in good repair;

                  (x) To the best knowledge of such Affiliated Originator, there
         is no valid and enforceable right of rescission offset, defense or
         counterclaim to any Note or Mortgage, including the obligation of the
         related Mortgagor to pay the unpaid principal of or interest on such
         Note or the defense of usury, nor will the operation of any of the
         terms of the Note or the Mortgage, or the exercise of any right
         thereunder, render either the Note or the Mortgage unenforceable in
         whole or in part, or subject to any right of rescission, set-off,
         counterclaim or defense, including the defense of usury, and no such
         right of rescission, set-off, counterclaim or defense has been asserted
         with respect thereto;

                  (xi) To the best knowledge of such Affiliated Originator,
         there is no mechanics' lien or claim for work, labor or material
         affecting any Mortgaged Property which is or may be a lien prior to, or
         equal with, the lien of the related Mortgage except those which are
         insured against by any title insurance policy referred to in paragraph
         (xiii) below;




                                       9
<PAGE>   13

                  (xii) Each Mortgage Loan at the time it was made complied in
         all material respects with all applicable state and federal laws and
         regulations, including, without limitation, the federal
         Truth-in-Lending Act and other consumer protection laws, real estate
         settlement procedure, usury, equal credit opportunity, disclosure and
         recording laws;

                  (xiii) With respect to each Mortgage Loan, a title search or a
         lender's title insurance policy, issued in standard California Land
         Title Association form or American Land Title Association form, or
         other form acceptable in a particular jurisdiction by a title insurance
         company authorized to transact business in the state in which the
         related Mortgaged Property is situated, in an amount at least equal to
         the Original Principal Amount of such Mortgage Loan insuring the
         mortgagee's interest under the related Mortgage Loan as the holder of a
         valid first, second or third mortgage lien of record on the real
         Mortgaged Property described in the related Mortgage, as the case may
         be, subject only to exceptions of the character referred to in
         paragraph (vi) above, was effective on the date of the origination of
         such Mortgage Loan, and, as of the Cut-Off Date such policy, if issued,
         will be valid and thereafter such policy shall continue in full force
         and effect;

                  (xiv) The improvements upon each Mortgaged Property are
         covered by a valid and existing hazard insurance policy (which may be a
         blanket policy of the type described in the Advanta Pooling Agreement)
         with a generally acceptable carrier that provides for fire and extended
         coverage representing coverage not less than the least of (A) the
         outstanding principal balance of the related Mortgage Loan (together,
         in the case of a Junior Mortgage Loan, with the outstanding principal
         balance of the Senior Lien), (B) the minimum amount required to
         compensate for damage or loss on a replacement cost basis or (C) the
         full insurable value of the Mortgaged Property;

                  (xv) If the Mortgage Loan at the time of origination relates
         to a Mortgaged Property in an area identified in the Federal Register
         by the Federal Emergency Management Agency as having special flood
         hazards, (which may be a blanket policy of the type described in the
         Advanta Pooling Agreement) a flood insurance policy in a form meeting
         the requirements of the current guidelines of the Federal Insurance
         Administration with a generally acceptable carrier is in effect with
         respect to such Mortgaged Property in an amount representing coverage,
         and which provides for a recovery by the Master Servicer of insurance
         proceeds relating to such Mortgage Loan of not less than the least of
         (i) the outstanding principal balance of the Mortgage Loan, (ii) the
         minimum amount required to compensate for damage or loss on a
         replacement cost basis and (iii) the maximum amount of insurance that
         is available under the Flood Disaster Protection Act of 1973;

                  (xvi) Each Mortgage and Note is the legal, valid and binding
         obligation of the maker thereof and is enforceable in accordance with
         its terms, except only as such enforcement may be limited by
         bankruptcy, insolvency,



                                       10
<PAGE>   14

         reorganization, moratorium or other similar laws affecting the
         enforcement of creditors' rights generally and by general principles of
         equity (whether considered in a proceeding or action in equity or at
         law), and all parties to each Mortgage Loan had full legal capacity to
         execute all documents relating to such Mortgage Loan and convey the
         estate therein purported to be conveyed;

                  (xvii) Each Affiliated Originator has caused and will cause to
         be performed any and all acts required to be performed to preserve the
         rights and remedies of the Master Servicer in any Mortgage Insurance
         Policy applicable to any Mortgage Loan delivered by such Affiliated
         Originator or Warehouse Trust including, to the extent such Mortgage
         Loan is not covered by a blanket policy described in the Advanta
         Pooling Agreement, any necessary notifications of insurers, assignments
         of policies or interests therein, and establishments of co-insured,
         joint loss payee and mortgagee rights in favor of the Master Servicer;

                  (xviii) Each original Mortgage was recorded or is in the
         process of being recorded, and all subsequent assignments of the
         original Mortgage have been recorded in the appropriate jurisdictions
         wherein such recordation is necessary to perfect the lien thereof for
         the benefit of the applicable Affiliated Originator, subject to the
         provisions of Section 3.5(b) of the Advanta Pooling Agreement;

                  (xix) The terms of each Note and each Mortgage have not been
         impaired, altered or modified in any respect, except by a written
         instrument which has been recorded, if necessary, to protect the
         interest of the owners and which has been delivered to the Trustee. The
         substance of any such alteration or modification is reflected on the
         related Schedule of Mortgage Loans and has been approved by the primary
         mortgage guaranty insurer, if any;

                  (xx) The proceeds of each Mortgage Loan have been fully
         disbursed, and there is no obligation on the part of the mortgagee to
         make future advances thereunder. Any and all requirements as to
         completion of any on-site or off-site improvements and as to
         disbursements of any escrow funds therefor have been complied with. All
         costs, fees and expenses incurred in making or closing or recording
         such Mortgage Loans were paid;

                  (xxi) Except as otherwise required by law or pursuant to the
         statute under which the related Mortgage Loan was made, the related
         Note is not and has not been secured by any collateral, pledged account
         or other security except the lien of the corresponding Mortgage;

                  (xxii) To the best knowledge of such Affiliated Originator, no
         Mortgage Loan was originated under a buydown plan;

                  (xxiii) To the best knowledge of such Affiliated Originator,
         no Mortgage Loan provides for negative amortization, has a shared
         appreciation feature, or other contingent interest feature;



                                       11
<PAGE>   15

                  (xxiv) Each Mortgaged Property is located in the state
         identified in the Schedule of Mortgage Loans and consists of one or
         more parcels of real Mortgaged Property with a residential dwelling
         erected thereon;

                  (xxv) Each Mortgage contains a provision for the acceleration
         of the payment of the unpaid principal balance of the related Mortgage
         Loan in the event the related Mortgaged Property is sold without the
         prior consent of the mortgagee thereunder, except as may be otherwise
         provided in the Advanta Pooling Agreement;

                  (xxvi) Any advances made after the date of origination of a
         Mortgage Loan but prior to the Cut-Off Date, have been consolidated
         with the outstanding principal amount secured by the related Mortgage,
         and the secured principal amount, as consolidated, bears a single
         interest rate and single repayment term reflected on the Schedule of
         Mortgage Loans. No Note permits or obligates the Master Servicer, the
         Sub-Servicer or the Sponsor to make future advances to the related
         Mortgagor at the option of the Mortgagor;

                  (xxvii) To the best knowledge of such Affiliated Originator,
         there is no proceeding pending or threatened for the total or partial
         condemnation of any Mortgaged Property, nor is such a proceeding
         currently occurring, and each Mortgaged Property is undamaged by waste,
         fire, earthquake or earth movement, flood, tornado or other casualty,
         so as to affect adversely the value of the Mortgaged Property as
         security for the Mortgage Loan or the use for which the premises were
         intended;

                  (xxviii) All of the improvements which were included for the
         purposes of determining the Appraised Value of any Mortgaged Property
         lie wholly within the boundaries and building restriction lines of such
         Mortgaged Property, and no improvements on adjoining properties
         encroach upon such Mortgaged Property, and, if a title insurance policy
         exists with respect to such Mortgaged Property, are stated in such
         title insurance policy and affirmatively insured;

                  (xxix) To the best knowledge of such Affiliated Originator, no
         improvement located on or being part of any Mortgaged Property is in
         violation of any applicable zoning law or regulation. All inspections,
         licenses and certificates required to be made or issued with respect to
         all occupied portions of each Mortgaged Property and, with respect to
         the use and occupancy of the same, including but not limited to
         certificates of occupancy and fire underwriting certificates, have been
         made or obtained from the appropriate authorities and such Mortgaged
         Property is lawfully occupied under the applicable law;

                  (xxx) With respect to each Mortgage constituting a deed of
         trust, a trustee, duly qualified under applicable law to serve as such,
         has been properly designated and currently so serves and is named in
         such Mortgage, and no fees or expenses are or will become payable by
         the Sponsor or the Advanta Trust to the




                                       12
<PAGE>   16

         trustee under the deed of trust, except in connection with a trustee's
         sale after default by the related Mortgagor;

                  (xxxi) With respect to each Junior Mortgage Loan, either (A)
         no consent for such Mortgage Loan was required by the holder of the
         related Senior Lien prior to the making of such Mortgage Loan or (B)
         such consent has been obtained and is contained in the related Mortgage
         File;

                  (xxxii) Each Mortgage contains customary and enforceable
         provisions which render the rights and remedies of the holder thereof
         adequate for the realization against the related Mortgaged Property of
         the benefits of the security, including (A) in the case of a Mortgage
         designated as a deed of trust, by trustee's sale and (B) otherwise by
         judicial foreclosure. To the best knowledge of such Affiliated
         Originator, there is no homestead or other exemption available which
         materially interferes with the right to sell the related Mortgaged
         Property at a trustee's sale or the right to foreclose the related
         Mortgage;

                  (xxxiii) Except as provided by clause (viii) of this Section,
         there is no default, breach, violation or event of acceleration
         existing under any Mortgage or the related Note and no event which,
         with the passage of time or with notice and the expiration of any grace
         or cure period, would constitute a default, breach, violation or event
         of acceleration; and the applicable Affiliated Originator has not
         waived any default, breach, violation or event of acceleration;

                  (xxxiv) To the best knowledge of such Affiliated Originator,
         no instrument of release or waiver has been executed in connection with
         any Mortgage Loan, and no Mortgagor has been released, in whole or in
         part, except in connection with an assumption agreement which has been
         approved by the primary mortgage guaranty insurer, if any, and which
         has been delivered to the Trustee;

                  (xxxv) To the best knowledge of such Affiliated Originator,
         the maturity date of each Mortgage Loan which is a Junior Mortgage Loan
         is at least twelve months prior to the maturity date of the related
         first mortgage loan if such first mortgage loan provides for a balloon
         payment;

                  (xxxvi) The credit underwriting guidelines applicable to each
         Mortgage Loan conform in all material respects to the Sponsor's
         underwriting guidelines;

                  (xxxvii) All parties to the Note and the Mortgage had legal
         capacity to execute the Note and the Mortgage and each Note and
         Mortgage have been duly and properly executed by such parties; and

                  (xxxviii) The related Affiliated Originator has no actual
         knowledge that there exist on any Mortgaged Property any hazardous
         substances, hazardous wastes or solid wastes, as such terms are defined
         in the Comprehensive Environmental Response Compensation and Liability
         Act, the Resource



                                       13
<PAGE>   17

         Conservation and Recovery Act of 1976, or other federal, state or local
         environmental legislation.

                  (c) No Originator Payment Obligations. There is no obligation
on the part of the Master Servicer or any other party to make payments in
addition to those made by the Mortgagor except as specified in the Advanta
Pooling Agreement.

                  The Representations and Warranties shall survive the transfer
and assignment of the Mortgage Loans to the Advanta Trust. Upon discovery by any
Affiliated Originator or the Sponsor of a breach of any of the Representations
and Warranties, without regard to any limitation set forth in such
Representation or Warranty concerning the knowledge of the related Affiliated
Originator as to the facts stated therein, which breach, in the opinion of the
Sponsor, materially and adversely affects the interests of the Sponsor, the
Owners or the Certificate Insurer in the related Mortgage Loan or Mortgage
Loans, the party discovering such breach shall give prompt written notice to the
other party, and the related Affiliated Originator shall be required to take the
remedial actions required by the related Advanta Pooling Agreement within the
time periods required thereto. No Affiliated Originator shall be obliged to act
in regard to Mortgage Loans not conveyed by it. Each Affiliated Originator
hereby acknowledges that a breach of any of the Representations and Warranties
listed in clauses (iii), (x) and (xvi) above materially and adversely affects
the interests of the Advanta Trust, the related Owners and the Certificate
Insurer.

                  Section 6. Authorized Representatives. The names of the
officers of the Affiliated Originators and of the Sponsor who are authorized to
give and receive notices, requests and instructions and to deliver certificates
and documents in connection with this Agreement on behalf of the Affiliated
Originator and of the Sponsor ("Authorized Representatives") are set forth on
Exhibit B. From time to time, the Affiliated Originator and the Sponsor may, by
delivering to the Trustee a revised exhibit, change the information previously
given, but the Trustee shall be entitled to rely conclusively on the last
exhibit until receipt of a superseding exhibit.

                  Section 7. Notices. All demands, notices and communications
relating to this Agreement shall be in writing and shall be deemed to have been
duly given when received by the other party or parties at the address shown
below, or such other address as may hereafter be furnished to the other party or
parties by like notice. Any such demand, notice or communication hereunder shall
be deemed to have been received on the date delivered to or received at the
premises of the addressee.

                  If to the Trustee:

                           Bankers Trust Company of California, N.A.
                           3 Park Plaza
                           Irvine, CA  92614
                           Telecopy:        (949) 253-7577
                           Telephone:       (949) 253-7575



                                       14
<PAGE>   18

                  If to any Affiliated Originator or the Sponsor:

                           Advanta Mortgage Corp. USA
                           10790 Rancho Bernardo Road
                           San Diego, California 92127
                           Attention:       Mortgage Structured Finance
                           Telecopy:        (619) 674-3592
                           Telephone:       (858) 676-3099

                  Section 8. Governing Law. This Agreement shall be governed by,
and construed in accordance with, the laws of the State of New York, without
regard to conflict of laws rules applied in the State of New York.

                  Section 9. Assignment. No party to this Agreement may assign
its rights or delegate its obligations under this Agreement without the express
written consent of the other parties, except as otherwise set forth in this
Agreement.

                  Section 10. Counterparts. For the purpose of facilitating the
execution of this Agreement and for other purposes, this Agreement may be
executed simultaneously in any number of counterparts, each of which shall be
deemed to be an original, and together shall constitute and be one and the same
instrument.

                  Section 11. Amendment. This Agreement may be amended from time
to time by any of the Affiliated Originators, the Sponsor and the Trustee only
by a written instrument executed by such parties and with the prior written
consent of each of the other parties hereto and the Certificate Insurer.

                  Section 12. Severability of Provisions. If any one or more of
the covenants, agreements, provisions or terms of this Agreement shall be for
any reason whatsoever held invalid, then such covenants, agreements, provisions
or terms shall be deemed severable from the remaining covenants, agreements,
provisions or terms of this Agreement and shall in no way affect the validity or
enforceability of the other provisions of this Agreement.

                  Section 13. No Agency; No Partnership or Joint Venture.
Neither the Affiliated Originators nor the Sponsor is the agent or
representative of the other, and nothing in this Agreement shall be construed to
make either the Affiliated Originator nor the Sponsor liable to any third party
for services performed by it or for debts or claims accruing to it against the
other party. Nothing contained herein nor the acts of the parties hereto shall
be construed to create a partnership or joint venture between the Sponsor and
the Affiliated Originator.

                  Section 14. Further Assurances. The Affiliated Originators and
Sponsor agree to cooperate reasonably and in good faith with one another in the
performance of this Agreement.

                  Section 15. The Certificate Insurer. The Certificate Insurer
is a third-party beneficiary of this Agreement. Any right conferred to the
Certificate Insurer shall



                                       15
<PAGE>   19

be suspended during any period in which the Certificate Insurer is in default in
its payment obligation's under the related Certificate Insurance Policy. During
any period of suspension, the Certificate Insurer's rights hereunder shall vest
in the Owners of the Offered Certificates and shall be exercisable by the Owners
of at least a majority in Percentage Interest of the Offered Certificates then
outstanding. At such time as the related Offered Certificates are no longer
Outstanding under the Advanta Pooling Agreement and the Certificate Insurer has
been reimbursed for all Insured Payments to which it is entitled under the
Advanta Pooling Agreement, the Certificate Insurer's rights hereunder shall
terminate.

                  Section 16. Maintenance of Records. Each Affiliated Originator
shall each continuously keep an original executed counterpart of this Agreement
in its official records.




                                       16
<PAGE>   20



                  IN WITNESS WHEREOF, the parties hereto have caused this Master
Loan Transfer Agreement to be duly executed by their respective officers, all as
of the day and year first above written.

                           ADVANTA MORTGAGE CORP. USA
                           ADVANTA MORTGAGE CORP. MIDATLANTIC
                           ADVANTA MORTGAGE CORP. MIDATLANTIC II
                           ADVANTA MORTGAGE CORP. MIDWEST
                           ADVANTA MORTGAGE CORP. NORTHEAST
                           ADVANTA NATIONAL BANK
                                   as Sellers and
                           ADVANTA CONDUIT RECEIVABLES, INC.
                                   An Affiliate

                           By:/s/ Michael Coco
                              --------------------------------
                               Name:     Michael Coco
                               Title:    Vice President

                           ADVANTA BANK CORP.
                                   as Seller

                           By:/s/ John L. Richards
                              --------------------------------
                               Name:    John L. Richards
                               Title:   President and CEO

                           ADVANTA MORTGAGE CONDUIT SERVICES,
                           INC. as Sponsor

                           By:/s/ Michael Coco
                              --------------------------------
                               Name: Michael Coco
                               Title: Vice President


                           ADVANTA FINANCE CORP.

                           By:/s/ Michael Coco
                              --------------------------------
                               Name: Michael Coco
                               Title: Vice President

                           BANKERS TRUST COMPANY OF CALIFORNIA,
                                   N.A., as Trustee and not in its individual
                                   capacity

                           By:/s/ Mark McNeill
                              --------------------------------
                               Name:     Mark McNeill
                               Title:    Assistant Secretary



                                       17
<PAGE>   21


                                                                       EXHIBIT A


                              CONVEYANCE AGREEMENT


                  Advanta Mortgage Corp. USA, Advanta Mortgage Corp.
Midatlantic, Advanta Mortgage Corp. Midatlantic II, Advanta Mortgage Corp.
Midwest, Advanta Mortgage Corp. Northeast, Advanta Finance Corp., Advanta Bank
Corp. and Advanta National Bank, (each, an "Affiliated Originator"), Advanta
Conduit Receivables, Inc., as an Affiliate, and Advanta Mortgage Conduit
Services, Inc., as Sponsor, pursuant to the Master Loan Transfer Agreement dated
as of May 1, 1999 among themselves and Bankers Trust Company of California, N.A.
as Trustee (the "Master Transfer Agreement"), hereby confirm their understanding
with respect to the conveyance by each Affiliated Originator, each Warehouse
Trust the Affiliate and the Sponsor of those Mortgage Loans listed on the
attached Schedule of Mortgage Loans (the "Transferred Mortgage Loans") to the
Sponsor.

                  Conveyance of Transferred Mortgage Loans. Each Affiliated
Originator, the Affiliate and the Sponsor, concurrently with the execution and
delivery of this Conveyance Agreement, does hereby irrevocably transfer, assign,
set over and otherwise convey, and does direct the Trustee to convey to the
Sponsor and/or the Advanta Mortgage Loan Trust, without recourse (except as
otherwise explicitly provided for herein) all of its right, title and interest
in and to the Transferred Mortgage Loans being conveyed by it, including
specifically, without limitation, the Mortgages (as such term is defined in the
"Advanta Pooling Agreement"), the Mortgage Files and all other documents,
materials and properties appurtenant thereto and the Notes, including all
accrued interest and principal received by such Affiliated Originator on or with
respect to such Transferred Mortgage Loans on or after the related Cut-off Date,
together with all of its right, title and interest in and to the proceeds
received on or after the related Cut-off Date of any related Mortgage Insurance
Policies.

                  If an Affiliated Originator cannot deliver the original
Mortgage or mortgage assignment with evidence of recording thereon concurrently
with the execution and delivery of this Conveyance Agreement solely because of a
delay caused by the public recording office where such original Mortgage or
mortgage assignment has been delivered for recordation, such Affiliated
Originator shall promptly deliver to the Trustee such original Mortgage or
mortgage assignment with evidence of recording indicated thereon upon receipt
thereof from the public recording official.

                  The costs relating to the delivery of the documents specified
in this Conveyance Agreement shall be borne by each Affiliated Originator.

                  The Affiliated Originators hereby make the Representations and
Warranties set forth in Section 5(b) of the Master Transfer Agreement with
respect to the Transferred Mortgage Loans.



                                      A-1
<PAGE>   22

                  The "Cut-Off Date" with respect to such Transferred Mortgage
Loans shall be ________,______.

                  All terms and conditions of the Master Transfer Agreement are
hereby incorporated herein, provided that in the event of any conflict the
provisions of this Conveyance Agreement shall control over the conflicting
provisions of the Master Transfer Agreement.

                  For purposes of this Conveyance Agreement, the "Advanta
Pooling Agreement" is the Pooling and Servicing Agreement dated as of May 1,
1999 relating to Advanta Mortgage Loan Trust 1999-2.




                                      A-2
<PAGE>   23



                  Terms capitalized herein and not defined herein shall have
their respective meanings as set forth in the Master Transfer Agreement.

                        ADVANTA MORTGAGE CORP. USA
                        ADVANTA MORTGAGE CORP. MIDATLANTIC
                        ADVANTA MORTGAGE CORP. MIDATLANTIC II
                        ADVANTA MORTGAGE CORP. MIDWEST
                        ADVANTA MORTGAGE CORP. NORTHEAST
                        ADVANTA NATIONAL BANK,
                                as Affiliated Originators

                                         and

                        ADVANTA CONDUIT RECEIVABLES, INC.
                                as an Affiliate

                        By:_____________________________________________
                            Michael Coco, Vice President

                        ADVANTA BANK CORP.,
                                as Seller

                        By:_____________________________________________
                             Name:
                             Title:

                        ADVANTA MORTGAGE CONDUIT SERVICES,
                                INC., as Sponsor

                        By:_____________________________________________
                            Michael Coco, Vice President

                        BANKERS TRUST COMPANY
                        OF CALIFORNIA, N.A., as Trustee

                        By:_____________________________________________
                            Name:
                            Title:

                        ADVANTA FINANCE CORP.

                        By:_____________________________________________
                            Name:
                            Title:


Dated:


                                      A-3
<PAGE>   24




                                                                       EXHIBIT B


                           AUTHORIZED REPRESENTATIVES


                  Reference is hereby made to the Master Loan Transfer
Agreement, dated as of May 1, 1999 (the "Agreement"), among Advanta Mortgage
Corp. USA, Advanta Mortgage Corp. Midatlantic, Advanta Mortgage Corp.
Midatlantic II, Advanta Mortgage Corp. Midwest, Advanta Mortgage Corp.
Northeast, Advanta Finance Corp., Advanta Bank Corp. and Advanta National Bank,
as Affiliated Originators, Advanta Conduit Receivables, Inc., as an Affiliate,
Advanta Mortgage Conduit Services, Inc., as Sponsor and Bankers Trust Company of
California, N.A., as Trustee:

                  The following are the Affiliated Originators' Authorized
Representatives for purposes of the Agreement:



         Name                                                    Title
         ----                                                    -----

[Michael Coco]                                          [Vice President]

[Susan McVeigh]                                         [Vice President]





                  The following are the Sponsor's Authorized Representatives for
purposes of the Agreement:



         Name                                                    Title
         ----                                                    -----

[Michael Coco]                                          [Vice President]

[Susan McVeigh]                                         [Vice President]


                                      B-1

<PAGE>   1
                                                                     Exhibit 5.1


<PAGE>   2

                                                                    June 3, 1999



To the Addressees Listed on
the Annex A Hereto:

              Re: Advanta Mortgage Loan Trust 1999-2 (the "Trust")
              ----------------------------------------------------

Ladies and Gentlemen:

                  We have acted as special counsel to Advanta National Bank, a
national banking association (the "Bank"), Advanta Mortgage Corp. Midatlantic,
Advanta Mortgage Corp. Midatlantic II, Advanta Mortgage Corp. Midwest, each of
which is a Pennsylvania corporation, Advanta Bank Corp. ("ABC"), a Utah
industrial loan corporation, Advanta Mortgage Corp. Northeast, a New York
corporation, Advanta Finance Corp., a Nevada corporation, Advanta Mortgage Corp.
USA, a Delaware corporation ("AMCUSA") (collectively, the "Affiliated
Originators"), Advanta Mortgage Conduit Services, Inc., a Delaware corporation
("Conduit Services"), Advanta Mortgage Holding Company, a Delaware corporation
("AMHC") and Advanta Conduit Receivables Inc., a Delaware corporation
("Receivables") in connection with the execution and delivery of the following
documents:

                  (i) Pooling and Servicing Agreement, dated as of May 1, 1999
         (the "Pooling and Servicing Agreement"), among Conduit Services, as
         Sponsor (the "Sponsor"), AMCUSA, as Master Servicer, and Bankers Trust
         Company of California, N.A., a national banking association, as Trustee
         (the "Trustee");

                  (ii) Underwriting Agreement, dated May 26, 1999 (the
         "Underwriting Agreement"), between Conduit Services and Morgan Stanley
         & Co., Incorporated as the Representative of the Underwriters, (the
         "Representative");

                  (iii) Master Loan Transfer Agreement, dated as of May 1, 1999,
         among the Sponsor, Receivables, the Affiliated Originators and the
         Trustee, and the related Conveyance Agreement, dated as of June 3, 1999
         among such parties (together, the "Transfer Agreement");

                  (iv) Two letter agreements executed and delivered by AMHC, one
         of which is dated May 1, 1999 and is addressed to the Representative
         and Ambac Assurance Corporation ("Ambac"), and one of which is dated
         May 1, 1999 and is addressed to the Trust and Ambac, pursuant to which
         AMHC acknowledges its joint-and-several liability with respect to
         certain of Conduit Services', the Affiliated Originators' and AMCUSA's
         obligations to the Underwriters, Ambac and the Trust (collectively, the
         "AMHC Guaranties");


<PAGE>   3

                  (v) Insurance and Indemnity Agreement, dated as of June 3,
         1999 (the "Insurance Agreement"), among Ambac, the Sponsor, the Master
         Servicer and the Trustee;

                  (vi) Indemnification Agreement, dated as of May 26, 1999 (the
         "Indemnity Agreement"), among Ambac and the Underwriters;

                  (vii) Forms of the Certificates; and

                  (viii) an assignment, dated June 3, 1999 (the "Warehouse Trust
         Assignment") between Advanta Home Equity Loan Owner Trust 1998 MS-1
         (the "Warehouse Trust") and Advanta Mortgage Loan Trust 1999-2.

                  Capitalized terms used herein, but not defined, shall have the
meanings assigned to them in the Pooling and Servicing Agreement.

                  We have examined executed copies of the Pooling and Servicing
Agreement, the Underwriting Agreement, the Transfer Agreement, the Insurance
Agreement and the Indemnity Agreement, the Warehouse Trust Assignment and the
AMHC Guaranties (collectively, the "Documents"). We have also examined a copy of
each of the executed Certificates. We have also examined the Registration
Statement (No. 333-77927) filed with the Securities and Exchange Commission (the
"Commission") on Form S-3 (the "Registration Statement), in the form in which
such Registration Statement was declared effective, the Prospectus dated May 6,
1999 (the "Prospectus"), the Preliminary Prospectus Supplement dated May 21,
1999 (the "Preliminary Prospectus Supplement") and the Prospectus Supplement
dated May 26, 1999 (the "Prospectus Supplement") relating to the Class A
Certificates.

                  We have also examined originals or photostatic or certified
copies of all such corporate records of Conduit Services, AMCUSA, the Affiliated
Originators, Receivables and AMHC and such certificates of public officials,
certificates of corporate officers, and other documents, and such questions of
law, as we have deemed relevant and necessary as a basis for the opinions
hereinafter expressed. As to certain issues of fact material to the opinions
expressed herein, we have, with your consent, relied to the extent we deemed
appropriate upon certificates and representations of officers of the Sponsor,
AMCUSA, the Affiliated Originators, Receivables and AMHC. In making our
examinations and rendering the opinions herein expressed, we have made the
following assumptions:

         (1)      each party to each of the Documents (other than Conduit
                  Services, AMCUSA, the Affiliated Originators, Receivables and
                  AMHC, as applicable) has the corporate power to enter into and
                  perform all of its obligations thereunder;

         (2)      the due authorization, execution and delivery of the Documents
                  by all parties thereto other than Conduit Services, AMCUSA,
                  the Affiliated Originators, Receivables and AMHC and the
                  validity and binding effect on all parties other than Conduit
                  Services, AMCUSA, the Affiliated



                                       2
<PAGE>   4

                  Originators, Receivables and AMHC of each of the Documents, as
                  applicable;

         (3)      the genuineness of all signatures;

         (4)      the authenticity of all documents submitted to us as originals
                  and the conformity to originals of all documents submitted to
                  us as copies;

         (5)      the Advanta Mortgage Loan Trust 1999-2 created under the
                  Pooling and Servicing Agreement (the "Trust") will qualify as
                  a real estate mortgage investment conduit ("REMIC") as defined
                  in Section 860D of the Internal Revenue Code of 1986, as
                  amended (the "Code");

         (6)      the Class A Certificates and the Class B Certificates will
                  each constitute "regular interests" and the Class R
                  Certificates and Class RL Certificates will each constitute
                  the "residual interest" in a REMIC, as such terms are defined
                  in Section 860G(a) of the Code;

         (7)      as to Paragraph 22 below, we assume that the parties to the
                  Documents have and will perform their respective obligations
                  thereunder, including the delivery to the Trustee of Notes
                  relating to the Mortgage Loans following payment of legal and
                  sufficient consideration therefor, without any such Note
                  having been discharged, or the related Mortgage satisfied or
                  released and without the Trustee having actual or constructive
                  notice of the existence of any claim, lien, charge, mortgage,
                  security interest, encumbrance or right of Conduit Services,
                  any Affiliated Originator, any Unaffiliated Originator, or
                  creditors of Conduit Services or others. Further we have
                  assumed the absence of any defense against enforcement of, or
                  right of offset against, each such Note and the related
                  Mortgage. We have undertaken no independent review of the
                  Mortgage Loans, including the Notes and the Mortgages and have
                  relied solely upon the representations of Conduit Services and
                  of the Affiliated Originators in the Master Loan Transfer
                  Agreement and the Pooling and Servicing Agreement that they
                  have title to the Mortgage Loans; and

         (8)      in the case of each purchaser of a Class A Certificate
                  investing assets of an employee benefit plan covered by ERISA,
                  such plan is a plan to which Prohibited Transaction Exemption
                  91-14 is fully available.

                  We have assumed that the Mortgages and rights to receive
payment under the Mortgage Loans are not subject to any right, lien or interest
of any government or any agency or instrumentality thereof (including without
limitation any federal or state tax lien, or lien arising under Title IV of
ERISA) and that they are not subject to any lien arising by operation of law or
any judicial lien.

                  The opinions expressed in paragraphs 5, 7 and 10 with respect
to the enforceability of certain agreements are subject to the following
additional qualifications:



                                       3
<PAGE>   5

                  (a) The effect of bankruptcy, insolvency, reorganization,
moratorium, receivership, or other similar laws of general applicability
relating to or affecting creditors' rights generally or the rights of creditors
of national banking associations in the event of bankruptcy, insolvency,
reorganization, moratorium or receivership.

                  (b) The application of general principles of equity,
including, but not limited to, the right of specific performance (regardless of
whether enforceability is considered in a proceeding in equity or at law).

                  In addition, we wish to advise you that the enforceability of
certain provisions set forth in the Underwriting Agreement which purport to
provide for indemnification for losses due to securities laws violations may be
limited by public policy considerations.

                  We are admitted to the Bars of the States of New York and
California, and we express no opinion as to the laws of any other jurisdiction
except as to matters that are governed by federal law. All opinions expressed
herein are based on laws, regulations and policy guidelines currently in force
and may be affected by future regulations. Furthermore, no opinion is expressed
herein regarding the applicable state Blue Sky, legal investment or real estate
syndication laws.

                  Based upon the foregoing and subject to the last paragraph
hereof, we are of the opinion that:

                  1. Conduit Services has been duly organized and is validly
existing as a corporation in good standing under the laws of the State of
Delaware, and is qualified to do business in each state necessary to enable it
to perform its obligations under the Documents. Conduit Services has the
requisite power and authority to execute and deliver, engage in the transactions
contemplated by, and perform and observe the conditions of the Documents.

                  2. AMCUSA has been duly organized and is validly existing as a
corporation in good standing under the laws of the State of Delaware, and is
qualified to do business in each state necessary to enable it to perform its
obligations under the Transfer Agreement, the Insurance Agreement and the
Pooling and Servicing Agreement. AMCUSA has the requisite power and authority to
execute and deliver, engage in the transactions contemplated by, and perform and
observe the conditions of the Transfer Agreement, the Insurance Agreement and
the Pooling and Servicing Agreement.

                  3. Each Affiliated Originator (other than ABC) has been duly
organized and is validly existing and in good standing under the laws of its
jurisdiction of incorporation and is qualified to do business in each state
necessary to enable it to perform its obligations under the Transfer Agreement.
Each Affiliated Originator (other than ABC) has the requisite power and
authority to execute and deliver, engage in the transactions contemplated by,
and perform and observe the conditions of the Transfer Agreement.



                                       4
<PAGE>   6

                  4. The Warehouse Trust Assignment constitutes the legal valid
and binding agreement of the Warehouse Trust, and is enforceable against the
Warehouse Trust in accordance with its terms.

                  5. Each of the Documents has been duly and validly authorized,
executed and delivered by Conduit Services, all requisite corporate action
having been taken with respect thereto. Each of the Documents constitutes the
valid, legal and binding agreement of Conduit Services, and is enforceable
against Conduit Services in accordance with its terms.

                  6. Each of the Pooling and Servicing Agreement, the Insurance
Agreement and the Transfer Agreement has been duly and validly authorized,
executed and delivered by AMCUSA, and in the case of the Transfer Agreement, by
the Affiliated Originators (other than ABC), all requisite corporate action
having been taken with respect thereto.

                  7. Each of the Pooling and Servicing Agreement, the Insurance
Agreement and the Transfer Agreement constitutes the valid, legal and binding
agreement of AMCUSA, and in the case of the Transfer Agreement, of the
Affiliated Originators (other than ABC), and each is enforceable against AMCUSA
and in the case of the Transfer Agreement, of the Affiliated Originators, in
accordance with its terms.

                  8. AMHC has been duly organized and is validly existing as a
corporation in good standing under the laws of the State of Delaware, and is
qualified to do business in each state necessary to enable it to perform its
obligations under the Insurance Agreement and the AMHC Guaranties. AMHC has the
requisite power and authority to execute and deliver, engage in the transactions
contemplated by, and perform and observe the conditions of, the AMHC Guaranties.

                  9. The AMHC Guaranties have been duly and validly authorized,
executed and delivered by AMHC, all requisite corporate action having been taken
with respect thereto.

                  10. Each of the AMHC Guaranties each constitutes the valid,
legal and binding agreement of AMHC, and each is enforceable against AMHC in
accordance with its terms.

                  11. The Pooling and Servicing Agreement, assuming the due
execution and delivery thereof by the Trustee, creates a valid, express trust
under the laws of New York. Each Certificate, assuming the due execution by the
Trustee and due authentication by the Trustee and payment therefor, is validly
issued and outstanding and is entitled to the benefits of the Pooling and
Servicing Agreement.

                  12. No consent, approval, authorization or order of,
registration or filing with, or notice to, any governmental authority or court
is required under federal laws or the laws of the States of New York, Delaware
and California for the execution, delivery and performance of any of the Pooling
and Servicing Agreement, the Insurance Agreement or the Transfer Agreement or
the consummation of any other transaction



                                       5
<PAGE>   7

contemplated thereby by AMCUSA or, in the case of the Transfer Agreement, the
Affiliated Originators (other than ABC), except such which have been obtained.

                  13. No consent, approval, authorization or order of,
registration or filing with, or notice to, any governmental authority or court
is required under federal laws or the laws of the States of New York, Delaware
and California for the execution, delivery and performance of the Documents or
the offer, issuance, sale or delivery of the Class A Certificates or the
consummation of any other transaction contemplated thereby by Conduit Services,
except such which have been obtained.

                  14. No consent, approval, authorization or order of,
registration or filing with, or notice to, any governmental authority or court
is required under federal laws or the laws of the States of New York, Delaware
and California, for the execution, delivery and performance of the AMHC
Guaranties, except such which have been obtained.

                  15. To our knowledge, following due inquiry made of the
appropriate officers of Conduit Services, AMCUSA and the Affiliated Originators
(other than ABC), there are no actions, proceedings or investigations pending
or, to our knowledge, threatened against Conduit Services, AMCUSA or the
Affiliated Originators before any court, governmental agency or body or other
tribunal (a) asserting the invalidity of the Documents or the Certificates, (b)
seeking to prevent the issuance of the Certificates or the consummation of any
of the transactions contemplated by the Documents, (c) which would materially
and adversely affect the performance by Conduit Services, AMCUSA or the
Affiliated Originators, as applicable, of obligations under, or the validity or
enforceability of, the Documents or the Certificates, or (d) that would
adversely affect the status of the Trust as a "real estate mortgage investment
conduit" ("REMIC"), as such term is defined in the Internal Revenue Code of
1986, as amended.

                  16. Neither the transfer of the Mortgage Loans to the Trust,
the issuance or sale of the Certificates, nor the execution, delivery or
performance by the Affiliated Originators (other than ABC) of the Transfer
Agreement, or AMCUSA of the Pooling and Servicing Agreement, the Insurance
Agreement and the Transfer Agreement (a) conflicts or will conflict with or
results or will result in a breach of, or constitutes or will constitute a
default under (i) any term or provision of the certificate of incorporation or
bylaws of AMCUSA or the Affiliated Originators, as applicable; (ii) any term or
provision of any material agreement, contract, instrument or indenture, to which
AMCUSA or the Affiliated Originators, as applicable, is a party or is bound
which has been identified to us by the appropriate officers of AMCUSA; (iii) any
order, judgment, writ, injunction or decree of any court or governmental agency
or body or other tribunal having jurisdiction over AMCUSA or the Affiliated
Originators which has been identified to us by the appropriate officers of
AMCUSA; or (iv) any law, rule or regulation of the State of New York or the
federal government (including, without limitation, any bulk sales law), or (b)
results in, or will result in, the creation or imposition of any lien, charge or
encumbrance upon the Trust Estate created under the Pooling and Servicing
Agreement or upon the Certificates, except as otherwise contemplated by the
Pooling and Servicing Agreement.



                                       6
<PAGE>   8

                  17. Neither the transfer of the Mortgage Loans to the Trust,
the issuance or sale of the Certificates, nor the execution, delivery or
performance by Conduit Services of the Documents (a) conflicts or will conflict
with or results or will result in a breach of, or constitutes or will constitute
a default under (i) any term or provision of the certificate of incorporation or
bylaws of Conduit Services; (ii) any term or provision of any material
agreement, contract, instrument or indenture, to which Conduit Services is a
party or is bound, which has been identified to us by an officer or
representative of Conduit Services; (iii) any order, judgment, writ, injunction
or decree of any court or governmental agency or body or other tribunal having
jurisdiction over Conduit Services, which has been identified to us by an
officer or representative of Conduit Services; or (iv) any law, rule or
regulation of the State of New York or the federal government, or (b) results or
will result in the creation or imposition of any lien, charge or encumbrance
upon the Trust Estate or upon the related Certificates, except as otherwise
contemplated by the Pooling and Servicing Agreement.

                  18. The execution, delivery or performance by AMHC of the AMHC
Guaranties does not conflict with or will not conflict with and does not result
or will not result in a breach of, and does not constitute or will not
constitute a default under, (i) any term or provision of the certificate of
incorporation or bylaws of AMHC; (ii) any term or provision of any material
agreement, contract, instrument or indenture, to which AMHC is a party or is
bound, which have been identified to us by appropriate officers of AMHC; (iii)
any order, judgment, writ, injunction or decree of any court or governmental
authority having jurisdiction over AMHC, which have been identified to us by
appropriate officers of AMHC; or (iv) any law, rule or regulation of the States
of New York, Delaware and California or the federal government.

                  19. To the best of our knowledge, following due inquiry made
of the appropriate officers of AMHC, there are no actions, proceedings or
investigation pending or to our knowledge threatened against AMHC before any
court, administrative agency or other tribunal (a) asserting the invalidity of
the AMHC Guaranties, (b) seeking to prevent the consummation of any of the
transactions contemplated by the AMHC Guaranties, or (c) which would materially
and adversely affect the performance by AMHC of obligations of the AMHC
Guaranties.

                  20. The Registration Statement, the Prospectus, the
Preliminary Prospectus Supplement and the Prospectus Supplement (other than the
financial and statistical data included therein, as to which we are not called
upon to express any opinion), at the time the Registration Statement became
effective and as of the date hereof comply as to form in all material respects
with the requirements of the Securities Act of 1933, as amended (the "1933
Act"), and the rules and regulations thereunder, and the Exchange Act and the
rules and regulations thereunder, and we do not know of any amendment to the
Registration Statement required to be filed, or of any contracts, indentures or
other documents of a character required to be filed as an exhibit to the
Registration Statement or required to be described in the Registration
Statement, the Prospectus, the Preliminary Prospectus Supplement or the
Prospectus Supplement, which has not been filed or described as required.



                                       7
<PAGE>   9

                  21. Neither the qualification of the Pooling and Servicing
Agreement under the Trust Indenture Act of 1939, as amended, nor the
registration of the Trust created by the Pooling and Servicing Agreement under
the Investment Company Act of 1940 is required.

                  22. Immediately upon the receipt by the Trust, and the receipt
by Conduit Services and, as applicable, by each Affiliated Originator of legal
and sufficient consideration therefor, the Trust shall, pursuant to the laws of
the State of New York, be vested with good and indefeasible title to, and shall
be the sole owner of, and shall obtain all right, title and interest of Conduit
Services and of the Affiliated Originators in and to, the Mortgage Loans, free
and clear of any claim, lien, charge, mortgage, security interest, encumbrance
or rights of Conduit Services or of the Affiliated Originators or creditors of
Conduit Services or of the Affiliated Originators, see Federal Deposit Ins.
Corp. v. Forte, 463 N.Y.S.2d 844, 849 (A.D.2d Dep't 1983), except that until
such time as assignments of mortgage are recorded in the name of the Trustee in
the appropriate jurisdictions (x) the Trustee may not, in certain jurisdictions,
be independently able to enforce the Mortgage against the related Mortgaged
Property or the related Mortgagor, (y) the related Affiliated Originators could
record an assignment of a Mortgage in the name of a third party or record a
discharge and satisfaction of a Mortgage and (z) any notices which may be given
to the record holder of a Mortgage would be given to the related Affiliated
Originators.

                  23. The statements in the Preliminary Prospectus Supplement
and the Prospectus Supplement set forth under the captions "DESCRIPTION OF THE
CERTIFICATES" and "THE POOLING AND SERVICING AGREEMENT", to the extent such
statements purport to summarize certain provisions of the Certificates or of the
Pooling and Servicing Agreement, are fair and accurate in all material respects.

                  24. The statements in the Prospectus set forth under the
captions "ERISA CONSIDERATIONS", "CERTAIN FEDERAL INCOME TAX CONSEQUEN- CES" and
"CERTAIN LEGAL ASPECTS OF MORTGAGE LOANS AND RELATED MATTERS" and the statements
in the Preliminary Prospectus Supplement and the Prospectus Supplement set forth
under the captions "ERISA CONSIDERATIONS", "STATE TAXES" and "CERTAIN FEDERAL
INCOME TAX CONSEQUENCES", to the extent that they constitute matters of federal,
New York or California law, or federal, New York or California legal
conclusions, provide a fair and accurate summary of such law or conclusions.

                  25. To the best of our knowledge, the Registration Statement
has become effective and the Commission has not issued any stop order suspending
the effectiveness of the Registration Statement or any order directed to any
prospectus or prospectus supplement relating to the Class A Certificates
(including the Prospectus, the Preliminary Prospectus Supplement and the
Prospectus Supplement), and has not initiated or threatened any proceeding for
that purpose.

                  26. The provision in the Pooling and Servicing Agreement which
provides for the laws of New York to be the governing law would be upheld by a
court



                                       8
<PAGE>   10

applying New York or California law, or, if not upheld, then such court applying
New York or California law would hold that California law is the governing law
for the Pooling and Servicing Agreement.

                  Assuming that the Trust's acquisition of any Subsequent
Mortgage Loan is effected in accordance with the provisions of the Pooling and
Servicing Agreement, our opinions set forth above refer to such Subsequent
Mortgage Loans as well as the Initial Mortgage Loans held by the Trust.

                  We have rendered legal advice and assistance to the Conduit
Services and AMCUSA in the course of their investigation pertaining to, and
their participation in the preparation of, the Registration Statement, the
Prospectus the Preliminary Prospectus Supplement, the Prospectus Supplement, and
other matters relating to the sale of the Certificates. Rendering such
assistance involved, among other things, discussions and inquiries concerning
various legal and related subjects and reviews of certain records, documents,
opinions and certificates in accordance with instructions of Conduit Services
and AMCUSA. We also participated with the Conduit Services and AMCUSA in
conferences with representatives of the Underwriters and its counsel during
which the contents of the Registration Statement, the Prospectus, the
Preliminary Prospectus Supplement, the Prospectus Supplement and related matters
were discussed. Although we are not passing upon, and do not assume
responsibility for, the accuracy, completeness or fairness of the statements
contained in the Registration Statement, the Prospectus, the Preliminary
Prospectus Supplement and the Prospectus Supplement, in the course of our
examination of the Registration Statement, the Prospectus, the Preliminary
Prospectus Supplement, the Prospectus Supplement and certain other documents and
our participation in the discussions hereinabove mentioned, no facts have come
to our attention which lead us to believe that the Registration Statement, the
Prospectus, the Preliminary Prospectus Supplement and the Prospectus Supplement
(other than the financial statements and other financial and statistical data
contained therein, as to which we are not called upon to express any belief), at
the time the Registration Statement became effective, contained any untrue
statement of a material fact or omitted to state a material fact necessary in
order to make the statements therein not misleading, or that the Prospectus, the
Preliminary Prospectus Supplement and the Prospectus Supplement (other than the
financial statements and other financial and statistical data contained therein,
as to which we are not called upon to express any belief) as of its date and on
the date hereof contain any untrue statement of a material fact, or omits to
state any material fact necessary in order to make the statements therein, in
light of the circumstances under which they were made, not misleading.

                  This opinion is furnished by us as special counsel to Conduit
Services, the Affiliated Originators, AMCUSA and AMHC and is solely for the
benefit of the addressees hereof and their respective counsel. It may not be
relied upon by any other person or for any other purpose without our prior
written consent.

                                    Very truly yours,

                                    /s/ Dewey Ballantine LLP



                                       9
<PAGE>   11



                                     ANNEX A



Advanta Mortgage Conduit                         Ambac Assurance Corporation
  Services, Inc.                                 One State Street Plaza
10790 Rancho Bernardo Road                       New York, New York  10004
San Diego, California  92127
                                                 Bankers Trust Company of
Advanta Mortgage Corp. USA                         California, N.A., as Trustee
10790 Rancho Bernardo Road                       Three Park Plaza
San Diego, California  92127                     16th Floor
                                                 Irvine, California  92614
Morgan Stanley & Co. Incorporated
as Representative of the Underwriters            Moody's Investors Service
1585 Broadway                                    99 Church Street
New York, New York  10036                        New York, New York  10007

Arthur Andersen LLP                              Standard & Poor's Ratings Group
1601 Market Street                               25 Broadway
Philadelphia, Pennsylvania  19103                New York, New York  10004








                                       10

<PAGE>   1
                                                                     Exhibit 8.1




<PAGE>   2

                                  June 3, 1999


To the Addressees listed
  on Schedule I hereto

                  Re:     Advanta Mortgage Loan Trust 1999-2
                          Mortgage Loan Asset-Backed Certificates, Series 1999-2
                          ------------------------------------------------------

Ladies and Gentlemen:

                  We have acted as special tax counsel in connection with the
issuance and delivery of certain mortgage loan asset-backed certificates
denominated Advanta Mortgage Loan Trust 1999-2, Mortgage Loan Asset-Backed
Certificates, Series 1999-2 (collectively, the "Certificates"), pursuant to a
Pooling and Servicing Agreement dated as of May 1, 1999 (the "Pooling and
Servicing Agreement") among Advanta Mortgage Conduit Services, Inc. ("Conduit
Services"), Advanta Mortgage Corp. USA, as Master Servicer (the "Master
Servicer") and Bankers Trust Company of California, N.A., as trustee (the
"Trustee").

                  As special tax counsel, we have examined such documents as we
deemed appropriate for the purposes of rendering the opinions set forth below,
including the following: (a) Prospectus dated May 6, 1999 (the "Prospectus"), a
Preliminary Prospectus Supplement dated May 21, 1999 (the "Preliminary
Prospectus Supplement") and a Prospectus Supplement dated May 26, 1999 (the
"Prospectus Supplement") with respect to the Class A Certificates, and (b) an
executed copy of the Pooling and Servicing Agreement and the exhibits attached
thereto.

                  Terms capitalized herein and not otherwise defined herein
shall have their respective meanings as set forth in the Pooling and Servicing
Agreement.

                  Based upon the foregoing and upon the assumptions set forth
below, we are of the opinion, under the laws of the United States, New York
State, New York City and California in effect as of the date hereof, that:

                  1. Assuming that (a) each of the Upper-Tier REMIC and the
Lower-Tier REMIC created under the Pooling and Servicing Agreement elects, as it
has covenanted to do in the Pooling and Servicing Agreement, to be treated as a
"real estate mortgage investment conduit" ("REMIC"), as such term is defined in
the Internal Revenue Code of 1986, as amended (the "Code") and (b) the parties
to the Pooling and Servicing Agreement comply with the terms thereof, both the
Upper-Tier REMIC and the Lower-Tier REMIC will be treated as REMICs. Subject to
the above, (i) the Lower Tier REMIC Regular Interests, each Class of Class A
Certificates and the Class B Certificates issued pursuant to the Pooling and
Servicing Agreement will be treated as one or more "regular interests" in the
related REMIC and (ii) the Class R Certificates and Class RL Certificates will
be treated as the sole "residual interest" in the related REMIC.


<PAGE>   3

                  2. The statements under the caption "CERTAIN FEDERAL INCOME
TAX CONSEQUENCES" in the Prospectus, the Preliminary Prospectus Supplement and
the Prospectus Supplement and "STATE TAXES" in the Preliminary Prospectus
Supplement and the Prospectus Supplement are accurate and complete in all
material respects.

                  3. As a consequence of the qualification of the Upper-Tier
REMIC and the Lower-Tier REMIC each as a REMIC, the Class A Certificates will be
treated as "regular . . . interest(s) in a REMIC" under Section 7701(a)(19)(C)
of the Code and "real estate assets" under Section 856(c) of the Code in the
same proportion that the assets in the Trust consist of qualifying assets under
such Sections. In addition, as a consequence of the qualification of the
Upper-Tier REMIC and the Lower-Tier REMIC each as a REMIC, interest on the Class
A Certificates will be treated as "interest on obligations secured by mortgages
on real property" under Section 856(c) of the Code to the extent that such Class
A Certificates are treated as "real estate assets" under Section 856(c) of the
Code.

                  4. The Trust will not be subject to tax upon its income or
assets by the taxing authority of New York State or New York City.

                  5. The Trust will not be subject to the California state
income tax. While REMICS are subject to the California state minimum franchise
tax imposed under Article 2, Section 23153 of the California Revenue and
Taxation Code, no opinion is expressed as to whether the Trust is subject to
such tax.

                  6. Neither the Trust nor any portion thereof, including,
without limitation, the Supplemental Interest Account, will be treated as an
association taxable as a corporation for federal income tax purposes.

                  7. The acquisition, in the manner contemplated by the Pooling
and Servicing Agreement, by the Trust from time to time during the Pre-Funding
Period of the Subsequent Mortgage Loans will not cause either the Upper-Tier
REMIC or the Lower-Tier REMIC to fail to qualify as a REMIC, nor will any such
acquisition result in either the Lower-Tier REMIC or the Upper-Tier REMIC
engaging in a "prohibited transaction" under Section 860F(a) of the code.


                                             Very truly yours,
                                             /s/ Dewey Ballantine LLP

<PAGE>   1
                                                                    Exhibit 10.1




<PAGE>   2


                          AMBAC ASSURANCE CORPORATION,



                        MORGAN STANLEY & CO. INCORPORATED



                       PRUDENTIAL SECURITIES INCORPORATED



                                       and



                           SALOMON SMITH BARNEY, INC.



                            INDEMNIFICATION AGREEMENT



                       ADVANTA MORTGAGE LOAN TRUST 1999-2



Dated as of May 26, 1999

<PAGE>   3



                                TABLE OF CONTENTS

         (This Table of Contents is for convenience of reference only and shall
not be deemed to be part of this Indemnity Agreement. All capitalized terms used
in this Indemnity Agreement and not otherwise defined shall have the meanings
set forth in Article I of this Indemnity Agreement.)


<TABLE>
<CAPTION>
                                                                                                            Page
                                                                                                            ----
<S>                                                                                                          <C>
Section 1.  Defined Terms......................................................................................1
Section 2.  Other Definitional Provisions......................................................................1
Section 3.  Representations and Warranties of the Underwriters.................................................2
Section 4.  Representations and Warranties of the Certificate Insurer..........................................2
Section 5.  Indemnification....................................................................................3
Section 6.  Amendments, Etc....................................................................................5
Section 7.  Notices............................................................................................5
Section 8.  Severability.......................................................................................6
Section 9.  Governing Law......................................................................................6
Section 10.  Counterparts......................................................................................6
Section 11.  Headings..........................................................................................6
</TABLE>


<PAGE>   4



         INDEMNIFICATION AGREEMENT dated as of May 26, 1999 (the "Indemnity
Agreement"), by and among AMBAC ASSURANCE CORPORATION, as Certificate Insurer,
and MORGAN STANLEY & CO. INCORPORATED, PRUDENTIAL SECURITIES INCORPORATED and
SALOMON SMITH BARNEY, INC. (the"Underwriters").

         Section 1. Defined Terms. Unless the context clearly requires
otherwise, all capitalized terms used but not defined herein shall have the
respective meanings assigned to them in the Pooling and Servicing Agreement, the
Insurance Agreement or the Policy. For purposes of this Indemnity Agreement, the
following terms shall have the following meanings:

         "Certificate Insurer" means Ambac Assurance Corporation, or any
successor thereto, as issuer of the Policy.

         "Certificate Insurer Information" has the meaning given such term in
Section 4.

         "Insurance Agreement" means the Insurance and Indemnity Agreement (as
may be amended, modified or supplemented from time to time) dated as of June 3,
1999 by and among the Advanta Mortgage Conduit Services, Inc., as Sponsor,
Advanta Mortgage Corp. USA, as Master Servicer and the Certificate Insurer.

         "Offering Document" means, together, the Preliminary Prospectus
Supplement, dated May 21, 1999, and the Prospectus Supplement, dated May 26,
1999, in respect of the Certificates, and any amendment or supplement thereto,
and any other offering document in respect of the Certificates that makes
reference to the Policy.

         "Pooling and Servicing Agreement" means the Pooling and Servicing
Agreement, dated as of May 1, 1999, relating to the Advanta Mortgage Loan
Asset-Backed Certificates, Series 1999-2, by and among the Sponsor, the Master
Servicer and the Trustee (as may be amended, modified or supplemented from time
to time as set forth therein).

         "Securities Act" means the Securities Act of 1933, including, unless
the context otherwise requires, the rules and regulations thereunder, as amended
from time to time.

         "Securities Exchange Act" means the Securities Exchange Act of 1934,
including, unless the context otherwise requires, the rules and regulations
thereunder, as amended from time to time.

         "Underwriters" means Morgan Stanley & Co. Incorporated, Prudential
Securities Incorporated and Salomon Smith Barney, Inc., severally.

         "Underwriters' Information" has the meaning given such term in Section
3.

         Section 2. Other Definitional Provisions. The words "hereof," "herein"
and "hereunder" and words of similar import when used in this Indemnity
Agreement shall refer to this Indemnity Agreement as a whole and not to any
particular provision of this Indemnity Agreement, and Section, subsection,
Schedule and Exhibit references are to this Indemnity Agreement unless otherwise
specified. The meanings given to terms defined herein shall be equally
applicable to


<PAGE>   5

both the singular and plural forms of such terms. The words "include" and
"including" shall be deemed to be followed by the phrase "without limitation."

         Section 3. Representations and Warranties of the Underwriters. Each
Underwriter severally represent and warrant as of the Closing Date as follows:

                  (a) Compliance With Laws. Such Underwriter will comply in all
         material respects with all legal requirements in connection with offers
         and sales of the Certificates and will make such offers and sales in
         the manner to be provided in the Offering Document.

                  (b) Offering Document. Such Underwriter will not use, or
         distribute to other broker-dealers for use, any Offering Document in
         connection with the offer and sale of the Certificates unless such
         Offering Document includes such information relating to the Certificate
         Insurer as has been furnished by the Certificate Insurer for inclusion
         therein and has been approved by the Certificate Insurer.

                  (c) Underwriters' Information. All material provided by the
         Underwriters for inclusion in the Offering Document (as revised from
         time to time), shall be true and correct in all material respects, it
         being understood and agreed that the only such information furnished by
         the Underwriters consists of the following information (collectively,
         the "Underwriters' Information"): the information regarding the
         Underwriters contained under the heading "Underwriting" in the Offering
         Document.

         Section 4. Representations and Warranties of the Certificate Insurer.
The Certificate Insurer represents and warrants to each Underwriter as follows:

(a) Organization and Licensing. The Certificate Insurer is a duly organized and
licensed and validly existing Wisconsin stock insurance company duly qualified
to conduct an insurance business in the State of New York.

(a) Corporate Power. The Certificate Insurer has the corporate power and
authority to issue the Policy and execute this Indemnity Agreement and to
perform all of its obligations hereunder and thereunder.

(a) Authorization; Approvals. Proceedings legally required for the issuance of
the Policy and the execution, delivery and performance of this Indemnity
Agreement have been taken and all material licenses, orders, consents or other
authorizations or approvals of any governmental boards or bodies legally
required for the enforceability of the Policy have been obtained; any
proceedings not taken and any licenses, authorizations or approvals not obtained
are not material to the enforceability of the Policy.

(a) Enforceability. The Policy, when issued, and this Indemnity Agreement will
each constitute a legal, valid and binding obligation of the Certificate
Insurer, enforceable in accordance with its terms, subject to insolvency,
reorganization, moratorium, receivership and other similar laws affecting
creditors' rights generally and by general principles of equity and subject to
principles of public policy limiting the right to enforce the indemnification
provisions contained therein and herein, insofar as such provisions relate to
indemnification for liabilities arising under federal securities laws.



<PAGE>   6

(a) Financial Information. The consolidated financial statements of
the Certificate Insurer and subsidiaries as of December 31, 1998 and December
31, 1997, and for each of the years in the three-year period ended December 31,
1998, prepared in accordance with generally accepted accounting principles,
included in the Annual Report on Form 10-K of Ambac Financial Group, Inc. (which
was filed with the Commission on March 30, 1999; Commission File Number 1-10777)
and the unaudited consolidated financial statements of the Certificate Insurer
and subsidiaries as of March 31, 1999 and for the periods ending March 31, 1999
and March 31, 1998 included in the Quarterly Report on Form 10-Q of Ambac
Financial Group, Inc. for the period ended March 31, 1999 (which was filed with
the Commission on May 12, 1999), which are incorporated by reference in the
Offering Document, fairly present in all material respects the financial
condition of the Certificate Insurer as of such dates and for the periods
covered by such statements in accordance with generally accepted accounting
principles consistently applied. Since March 31, 1999, there has been no
material change in such financial condition of the Certificate Insurer that
would materially and adversely affect its ability to perform its obligations
under the Policy.

(a) Certificate Insurer Information. The information in the Offering Document as
of the date hereof under the captions "THE CERTIFICATE INSURER" and "THE
CERTIFICATE INSURANCE POLICY" (together, the "Certificate Insurer Information")
is true and correct in all material respects and does not contain any untrue
statement of a material fact.

(a) Rating. The Certificate Insurer is not aware of any facts that if disclosed
to Moody's or S&P would be reasonably expected to result in a downgrade of the
rating of the financial strength of the Certificate Insurer by either of such
Rating Agencies.

(a) No Litigation. There are no actions, suits, proceedings or investigations
pending or, to the best of the Certificate Insurer's knowledge, threatened
against it at law or in equity or before or by any court, governmental agency,
board or commission or any arbitrator which, if decided adversely, would result
in a Material Adverse Change or would materially and adversely affect its
ability to perform its obligations under the Policy or this Indemnification
Agreement.

(a) 1933 Act Registration. The Policy is exempt from registration under the
Securities Act.

         Section 5. Indemnification.

                  (a) The Underwriters hereby severally agree to pay, and to
         protect, indemnify and save harmless, the Certificate Insurer and its
         officers, directors, shareholders, employees, agents and each Person,
         if any, who controls the Certificate Insurer within the meaning of
         either Section 15 of the Securities Act or Section 20 of the Securities
         Exchange Act from and against, any and all claims, losses, liabilities
         (including penalties), actions, suits, judgments, demands, damages,
         costs or expenses (including reasonable fees and expenses of attorneys,
         consultants and auditors and reasonable costs of investigations) of any
         nature arising out of or by reason of any untrue statement of a
         material fact or an omission to state a material fact necessary in
         order to make the statements therein in light of the circumstances in
         which they were made not misleading, contained in the



<PAGE>   7

         Underwriters' Information or a breach of any of the representations and
         warranties of the Underwriters contained in Section 3.

                  (b) The Certificate Insurer agrees to pay, and to protect,
         indemnify and save harmless, each Underwriters and their respective
         officers, directors, shareholders, employees, agents and each Person,
         if any, who controls such Underwriters within the meaning of either
         Section 15 of the Securities Act or Section 20 of the Securities
         Exchange Act from and against, any and all claims, losses, liabilities
         (including penalties), actions, suits, judgments, demands, damages,
         costs or expenses (including reasonable fees and expenses of attorneys,
         consultants and auditors and reasonable costs of investigations) of any
         nature arising out of or by reason of any untrue statement of a
         material fact or an omission to state a material fact necessary in
         order to make the statements therein in light of the circumstances in
         which they were made not misleading, contained in the Certificate
         Insurer Information or a breach of any of the representations and
         warranties of the Certificate Insurer contained in Section 4.

                  (c) If any action or proceeding (including any governmental
         investigation) shall be brought or asserted against any Person
         (individually, an "Indemnified Party" and, collectively, the
         "Indemnified Parties") in respect of which the indemnity provided in
         this Section 5(a) or (b) may be sought from any of the Underwriters, on
         the one hand, or the Certificate Insurer, on the other (each, an
         "Indemnifying Party") hereunder, each such Indemnified Party shall
         promptly notify the Indemnifying Party in writing, and the Indemnifying
         Party shall assume the defense thereof, including the employment of
         counsel reasonably satisfactory to the Indemnified Party and the
         payment of all expenses. The Indemnified Party shall have the right to
         employ separate counsel in any such action and to participate in the
         defense thereof at the expense of the Indemnified Party; provided,
         however, that the fees and expenses of such separate counsel shall be
         at the expense of the Indemnifying Party if (i) the Indemnifying Party
         has agreed to pay such fees and expenses, (ii) the Indemnifying Party
         shall have failed to assume the defense of such action or proceeding
         and employ counsel reasonably satisfactory to the Indemnified Party in
         any such action or proceeding or (iii) the named parties to any such
         action or proceeding (including any impleaded parties) include both the
         Indemnified Party and the Indemnifying Party, and the Indemnified Party
         shall have been advised by counsel that there may be one or more legal
         defenses available to it which are different from or additional to
         those available to the Indemnifying Party (in which case, if the
         Indemnified Party notifies the Indemnifying Party in writing that it
         elects to employ separate counsel at the expense of the Indemnifying
         Party, the Indemnifying Party shall not have the right to assume the
         defense of such action or proceeding on behalf of such Indemnified
         Party, it being understood, however, that the Indemnifying Party shall
         not, in connection with any one such action or proceeding or separate
         but substantially similar or related actions or proceedings in the same
         jurisdiction arising out of the same general allegations or
         circumstances, be liable for the reasonable fees and expenses of more
         than one separate firm of attorneys at any time for the Indemnified
         Parties, which firm shall be designated in writing by the Indemnified
         Party). The Indemnifying Party shall not be liable for any settlement
         of any such action or proceeding effected without its written consent
         to the extent that any such settlement shall be prejudicial to the
         Indemnifying Party, but, if settled with its written consent, or if
         there is a final judgment for the plaintiff in any such action or
         proceeding with respect to which the Indemnifying Party shall have
         received notice in


<PAGE>   8

         accordance with this subsection (c), the Indemnifying Party agrees to
         indemnify and hold the Indemnified Parties harmless from and against
         any loss or liability by reason of such settlement or judgment.

                  (d) To provide for just and equitable contribution if the
         indemnification provided by the Indemnifying Party is determined to be
         unavailable or insufficient to hold harmless any Indemnified Party
         (other than due to application of this Section), each Indemnifying
         Party shall contribute to the losses incurred by the Indemnified Party
         on the basis of the relative fault of the Indemnifying Party, on the
         one hand, and the Indemnified Party, on the other hand provided, that
         no Underwriter shall be liable for any amount in excess of (i) the
         excess of the sales prices of the Certificates to the public over the
         prices paid therefor by the Underwriters over (ii) the aggregate amount
         of any damages which the Underwriters have otherwise been required to
         pay in respect of the same or any substantially similar claim.

                           The relative fault of each Indemnifying Party, on the
         one hand, and each Indemnified Party, on the other, shall be determined
         by reference to, among other things, whether the breach of, or alleged
         breach of, any of its representations and warranties set forth within
         the control of, the Indemnifying Party or the Indemnified Party, and
         the parties relative intent, knowledge, access to information and
         opportunity to correct or prevent such breach.

                           No person guilty of fraudulent misrepresentation
         (within the meaning of Section (11)(f) of the Securities Act) shall be
         entitled to contribution from any person who was not guilty of such
         fraudulent misrepresentation.

         Section 6. Amendments, Etc. This Indemnity Agreement may be amended,
modified, supplemented or terminated only by written instrument or written
instruments signed by the parties hereto.

         Section 7. Notices. All demands, notices and other communications to be
given hereunder shall be in writing (except as otherwise specifically provided
herein) and shall be mailed by registered mail or personally delivered and
telecopied to the recipient as follows:

                  (a)   To the Certificate Insurer:

                        Ambac Assurance Corporation
                        One State Street Plaza
                        New York, New York  10004

                        Attention:  Structured Finance Department - MBS
                        Telecopy No.:  212-363-1459
                        Confirmation:  212-668-0340


<PAGE>   9

                  (b)   To the Representative of the Underwriters:

                        Morgan Stanley & Co. Incorporated
                        1585 Broadway
                        New York, New York  10036

                        Attention: ___________________

         A party may specify an additional or different address or addresses by
writing mailed or delivered to the other parties as aforesaid. All such notices
and other communications shall be effective upon receipt.

         Section 8. Severability. In the event that any provision of this
Indemnity Agreement shall be held invalid or unenforceable by any court of
competent jurisdiction, the parties hereto agree that such holding shall not
invalidate or render unenforceable any other provision hereof. The parties
hereto further agree that the holding by any court of competent jurisdiction
that any remedy pursued by any party hereto is unavailable or unenforceable
shall not affect in any way the ability of such party to pursue any other remedy
available to it.

         Section 9. Governing Law. This Indemnity Agreement shall be governed by
and construed in accordance with the laws of the State of New York.

         Section 10. Counterparts. The Indemnity Agreement may be executed in
counterparts by the parties hereto, and all such counterparts shall constitute
one and the same instrument.

         Section 11. Headings. The headings of Sections and the Table of
Contents contained in this Indemnity Agreement are provided for convenience
only. They form no part of this Indemnity Agreement and shall not affect its
construction or interpretation.

         [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]



<PAGE>   10




         IN WITNESS WHEREOF, the parties hereto have executed this
Indemnification Agreement, all as of the day and year first above mentioned.

                                   AMBAC ASSURANCE CORPORATION,
                                       as Certificate Insurer


                                   By: /s/ Thomas J. Adams
                                       -----------------------------
                                       Name:  Thomas J. Adams
                                       Title:


                                   MORGAN STANLEY & CO. INCORPORATED


                                   By: /s/ Valerie Kay
                                       -----------------------------
                                       Name:  Valerie Kay
                                       Title: Vice President


                                   PRUDENTIAL SECURITIES INCORPORATED


                                   By: /s/ Chris Riccardi
                                       -----------------------------
                                       Name:  Chris Riccardi
                                       Title: Vice President


                                   SALOMON SMITH BARNEY, INC.


                                   By: /s/ Paul Humphrey
                                       -----------------------------
                                       Name:  Paul Humphrey
                                       Title: Vice President

<PAGE>   1
                                                                    Exhibit 10.2



<PAGE>   2

                                                                    June 3, 1999



Morgan Stanley & Co. Incorporated
As Representative of the Underwriters
1585 Broadway
New York, New York 10036


Ambac Assurance Corporation
One State Street Plaza
New York, New York 10004

         Re:      Underwriting Agreement dated May 26, 1999 (the "Underwriting
                  Agreement") between Advanta Mortgage Conduit Services, Inc.
                  ("Conduit Services") and Morgan Stanley & Co. Incorporated as
                  representative of the Underwriters (the "Representative") and
                  the Insurance and Indemnity Agreement dated as of June 3, 1999
                  (the "Insurance Agreement") among Ambac Assurance Corporation
                  (the "Certificate Insurer"), Conduit Services, Advanta
                  Mortgage Corp. USA, as Master Servicer, and Bankers Trust
                  Company of California, N.A., as Trustee
                  --------------------------------------------------------------


Ladies and Gentlemen:

                  Pursuant to the Underwriting Agreement and the Insurance
Agreement (together, the "Designated Agreements"), Conduit Services has
undertaken certain financial obligations with respect to the indemnification of
the Underwriters and the Certificate Insurer with respect to the Registration
Statement, the Prospectus and the Prospectus Supplement described in the
Designated Agreements. Any financial obligations of Conduit Services under the
Designated Agreements, whether or not specifically enumerated in this paragraph,
are hereinafter referred to as the "Joint and Several Obligations"; provided,
however, the "Joint and Several Obligations" shall mean only the financial
obligations of Conduit Services under the Designated Agreements (including the
payment of money damages for a breach of any of Conduit Services's obligations
under the Designated Agreement, whether financial or otherwise) but shall not
include any obligations not relating to the payment of money.

                  As a condition of their respective executions of the
Underwriting Agreement and of the Insurance Agreement, the Underwriters and the
Certificate Insurer have required the undersigned, Advanta Mortgage Holding
Company ("AMHC"), the parent corporation of Conduit Services, to acknowledge its
joint-and-several liability with Conduit Services for the payment of the Joint
and Several Obligations under the Designated Agreements.


<PAGE>   3

Now, therefore, the Underwriters, the Certificate Insurer and AMHC do hereby
agree that:

               (i)         AMHC hereby agrees to be absolutely and
                           unconditionally jointly and severally liable with
                           Conduit Services to the Underwriters for the payment
                           of the Joint and Several Obligations under the
                           Underwriting Agreement.

              (ii)         AMHC hereby agrees to be absolutely and
                           unconditionally jointly and severally liable with
                           Conduit Services to the Certificate Insurer for the
                           payment of the Joint and Several Obligations under
                           the Insurance Agreement.

             (iii)         AMHC may honor its obligations hereunder either by
                           direct payment of any Joint and Several Obligations
                           or by causing any Joint and Several Obligations to be
                           paid to the Underwriters and to the Certificate
                           Insurer by Conduit Services or another affiliate of
                           AMHC.


                  Capitalized terms used herein and not defined herein shall
have their respective meanings set forth in the Agreement.




                                       2
<PAGE>   4




                                      Very truly yours,

                                      ADVANTA MORTGAGE HOLDING COMPANY


                                      By:   /s/ Michael Coco
                                            ------------------------------
                                            Name:  Michael Coco
                                            Title: Vice President

MORGAN STANLEY & CO. INCORPORATED
[as Representative of the Underwriters]

By:   /s/ Valerie H. Kay
      -------------------------------
      Name:  Valerie H. Kay
      Title: Vice President


AMBAC ASSURANCE CORPORATION


By:   /s/ Thomas Adams
      -------------------------------
      Name:  Thomas J. Adams
      Title: Vice President









                       [AMHC Guaranty to the Underwriter]


                                      3

<PAGE>   1
                                                                    Exhibit 10.3



<PAGE>   2



                                                                    June 3, 1999



Advanta Mortgage Loan Trust 1999-2 (the "Trust")
c/o Bankers Trust Company of California, N.A.
Three Park Plaza
16th Floor
Irvine, California  92714

Ambac Assurance Corporation
One State Street Plaza
New York, New York 10004


         Re:      Pooling and Servicing Agreement dated as of May 1, 1999 (the
                  "Pooling and Servicing Agreement") among Advanta Mortgage
                  Conduit Services, Inc. as the Sponsor (the "Sponsor"), Advanta
                  Mortgage Corp. USA ("AMCUSA"), as Master Servicer, and Bankers
                  Trust Company of California, N.A. as Trustee (the "Trustee")
                  and the Master Loan Transfer Agreement dated as of May 1, 1999
                  (the "Master Transfer Agreement") among the Sponsor, the
                  Trustee, Advanta Conduit Receivables, Inc. as an Affiliate and
                  the Affiliated Originators named therein (the "Affiliated
                  Originators")
                  --------------------------------------------------------------

Ladies and Gentlemen:

                  Pursuant to the Pooling and Servicing Agreement and the
Transfer Agreement (the "Agreements"), AMCUSA in its capacity as Master
Servicer, has undertaken certain financial obligations with respect to its
servicing of the Mortgage Loans, including, but not limited to, the making of
Delinquency Advances and Servicing Advances. In addition, the Sponsor and the
Affiliated Originators have, in the Agreements undertaken certain financial
obligations, including, but not limited to, the payment of the Loan Purchase
Price relating to the repurchase of non-qualifying Mortgage Loans, the payment
of Substitution Amounts in connection with the substitution of Qualified
Replacement Mortgages and the payment of certain expenses of the Trust. Any
financial obligations of AMCUSA, the Sponsor or any Affiliated Originator under
either of the Agreements, whether or not specifically enumerated in this
paragraph, are hereinafter referred to as the "Joint and Several Obligations";
provided, however, that "Joint and Several Obligations" shall mean only the
financial obligations of AMCUSA, the Sponsor or any Affiliated Originator under
either of the Agreements (including the payment of money damages for a breach of
any of AMCUSA's, the Sponsor's or any Affiliated Originator's obligations under
either of the Agreements, whether financial or otherwise) but shall not include
any obligations not relating to the payment of money (e.g., the obligation to
service the Mortgage Loans).


<PAGE>   3

                  The Certificate Insurer has required the undersigned, Advanta
Mortgage Holding Company ("AMHC"), the parent corporation of AMCUSA and the
indirect corporate parent of the Sponsor, to acknowledge its joint-and-several
liability with AMCUSA, the Sponsor and the Affiliated Originators for the
payment of the Joint and Several Obligations under the Agreements.

                  Now, therefore, the Trust, the Certificate Insurer and AMHC do
hereby agree that:

                  (i)      AMHC hereby agrees to be absolutely and
                           unconditionally jointly and severally liable with
                           AMCUSA, the Sponsor and the Affiliated Originators to
                           the Trust and the Certificate Insurer for the payment
                           of the Joint and Several Obligations.

                  (ii)     AMHC may honor its obligations hereunder either by
                           direct payment of any Joint and Several Obligations
                           or by causing any Joint and Several Obligations to be
                           paid to the Trust and the Certificate Insurer by
                           AMCUSA, the Sponsor, any Affiliated Originator or
                           another affiliate of AMHC.

                  Capitalized terms used herein and not defined herein shall
have their respective meanings as set forth in the Agreement.


<PAGE>   4






                                            Very truly yours,

                                            ADVANTA MORTGAGE
                                              HOLDING COMPANY



                                            By:/s/ Michael Coco
                                               ------------------------------
                                               Name:  Michael Coco
                                               Title: Vice President


Acknowledged and Agreed:

ADVANTA MORTGAGE LOAN
  TRUST, 1999-2, by Bankers Trust
  Company of California, N.A. as Trustee


By:/s/ Mark McNeill
   -----------------------------
Name:  Mark McNeill
- --------------------------------
Title: Vice President
- --------------------------------



Acknowledged:

AMBAC ASSURANCE CORPORATION

By: /s/ Thomas Adams
    ----------------------------
Name:  Thomas J. Adams
- --------------------------------
Title: First Vice President
- --------------------------------


Dated:  June 3, 1999

                             [Guaranty to the Trust]


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