5. Without prejudice to the previous provisions of this Schedule—
(a)the revocation of regulation C7 of the 1986 regulations (additional payments by certain members in respect of previous service) shall not affect its operation as respects anything which immediately before the commencement date remains to be done under that regulation, and payments made under that regulation are to be treated for the purposes of these regulations as if they consisted of contributions made under regulation C4 in respect of employment in relation to which the person was a member;
(b)the periods in respect of which such payments are made by members may be counted by them as periods of membership in relation to the employment in respect of which they are made and, notwithstanding the revocation of regulation E25(3) to (5) of the 1986 regulations, that regulation shall apply as respects such membership resulting from payments made under regulation C7(2) (registration officers) on and after the commencement date as it applied to reckonable service resulting from earlier such payments.