62.— Where an adoption order is made under this Act, then—

(a) any order under which F74[a parent] of the child is required to make payments specifically for the benefit of the child, and

(b) any agreement whereby F74[a parent] of the child has undertaken to make payments specifically for the benefit of the child,

ceases to have effect, but without prejudice to the recovery of any arrears due under the order or agreement at the date of the adoption order.