<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM N-SAR
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FORM N-SAR.
</LEGEND>
<RESTATED>
<CIK> 0000756922
<NAME> MULTI CLASS ADVANTUS MORTGAGE SECURITIES
<SERIES>
<NUMBER> 100
<NAME> CLASS A
<MULTIPLIER> 1000
<CURRENCY> US
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 51,213
<INVESTMENTS-AT-VALUE> 50,026
<RECEIVABLES> 833
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 5
<TOTAL-ASSETS> 50,864
<PAYABLE-FOR-SECURITIES> 3,067
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 187
<TOTAL-LIABILITIES> 3,254
<SENIOR-EQUITY> 47
<PAID-IN-CAPITAL-COMMON> 49,481
<SHARES-COMMON-STOCK> 3,035
<SHARES-COMMON-PRIOR> 3,262
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 136
<ACCUMULATED-NET-GAINS> (596)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (1,186)
<NET-ASSETS> 30,879
<DIVIDEND-INCOME> 20
<INTEREST-INCOME> 1,865
<OTHER-INCOME> 0
<EXPENSES-NET> 305
<NET-INVESTMENT-INCOME> 1,580
<REALIZED-GAINS-CURRENT> (62)
<APPREC-INCREASE-CURRENT> (562)
<NET-CHANGE-FROM-OPS> 956
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1,098
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 191
<NUMBER-OF-SHARES-REDEEMED> 489
<SHARES-REINVESTED> 71
<NET-CHANGE-IN-ASSETS> (5,189)
<ACCUMULATED-NII-PRIOR> 3,027
<ACCUMULATED-GAINS-PRIOR> (533)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 144
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 392
<AVERAGE-NET-ASSETS> 32,309
<PER-SHARE-NAV-BEGIN> 10.30
<PER-SHARE-NII> 0.33
<PER-SHARE-GAIN-APPREC> (0.10)
<PER-SHARE-DIVIDEND> 0.35
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 10.18
<EXPENSE-RATIO> 0.95
</TABLE>
