(a) In addition to the contributions specified in Code Section 47-21-4, the University System of Georgia shall remit to the Teachers Retirement System of Georgia the following payments:

(1) An amount equal to the accrued liability contribution determined by the board of trustees in accordance with the provisions of Code Section 47-3-48 that would have been made on behalf of participating employees if they had been members of the Teachers Retirement System of Georgia; and

(2) An amount, if any, equal to the increase in the normal contribution rate determined by the board of trustees in accordance with the provisions of paragraph (2) of Code Section 47-3-43 which results directly from participating employees ceasing to be or failing to become members of the Teachers Retirement System of Georgia.

(b) The remittances provided for in subsection (a) of this Code section shall be made at the same time and in the same manner as those made on behalf of members of the Teachers Retirement System of Georgia.