21.— Section 470 of the Act of 1997 is amended, in subsection (1), in the definition of “relievable amount”—
(a) in paragraph (a), by inserting “reduced by the amount of credit due (if any) under section 470B(4)” after “amount of the payment”, and
(b) in paragraph (b), by inserting “reduced by the amount of credit due (if any) under section 470B(4)” after “referable to such reimbursement or discharge”.
