674.40—Treatment of loan repayments where cancellation, loan repayments, and minimum monthly repayments apply.
        
        (a) 
         An institution may not exercise the minimum monthly repayment provisions on a note when the borrower has received a partial cancellation for the period covered by a postponement.
    
    
        
        (b) 
         If a borrower has received Defense, NDSL, and Perkins loans and only one can be cancelled, the amount due on the uncancelled loan is the amount established in  § 674.31(b) (2), loan repayment terms;  § 674.33(b), minimum repayment rates; or  § 674.33(c), extension of repayment period.