(1) Reemployed members of Plan D, Plan J or Plan X. Any separated employee who

(a) had been receiving service or disability retirement benefits under Plan D, Plan J or Plan X, or

(b) is entitled to separation service retirement benefits under Plan D, Plan J or Plan X, or

(c) upon separation from employment with the City when covered by Plan D, Plan J or Plan X, did not withdraw their pension contributions,

Upon reemployment, may elect either to be subject to the provisions of the plan covering them when they separated from service with the City or to transfer membership to the applicable division covered by Plan A, Plan B, Plan L, or Plan Y. Such transfers are irrevocable.

(2) Effective Date. A membership transfer takes effect at the beginning of the first full pay period following the Board's receipt of a member's application for transfer.

(3) Contributions. If a member transfers membership to Plan A, Plan B, Plan L, or Plan Y, the member must pay the Retirement System the difference between the contributions made before the transfer and the amount that would have been contributed if membership had been established in such plan during previous credited service, in accordance with the provisions of § 22-803 (Purchase for Prior City Service), except that:

(a) Transferring members do not have to pay interest on contributions due.

(b) Any transferring member who had been contributing six percent (6%) of covered earnings for retirement under the previous pension plan does not have to make additional contributions.

(c) Any transferring member who had been contributing more than six percent (6%) of covered earnings for retirement under a previous pension plan is entitled to a refund of the portion of contributions in excess of six percent (6%). Such members are not paid interest on their refunds.

(d) Neither refunds nor additional payments are paid for the transfer of service credit earned before August 1, 1967.

(4) Transfer of credited service. In transfers of membership to Plan A, Plan B, Plan L, or Plan Y, all of the member's credited service, including service credited before the transfer, shall be transferred to the applicable plan. The transferred member shall be treated as though membership had existed in such plan for the member's entire credited service and the member's retirement rights and benefits shall be determined solely by the new applicable plan.