(1) Transfers between divisions. After transferring employment between divisions, a member's retirement rights and related benefits are determined solely by the provisions of the appropriate plan of the division into which the member has transferred. Credited service under the plan of the member's previous division is automatically transferred as credited service to the appropriate plan of the member's new division except in the following cases:

(a) Any disabled member who is (or was) transferred because of Civil Service Regulation 32 may remain a member of the appropriate plan of the division to which the member belonged before the transfer.
(b) If any member of Plan D, Plan J or Plan X who is eligible to retire transfers to employment covered by another plan of the Retirement System, such member shall retain both the eligibility for retirement and the accrued benefit as determined pursuant to the provisions relating to the plan of the division from which such member has transferred.

(c) Any vested member of Plan A, Plan B or Plan L who transfers to the Municipal Division New may elect to have credited service calculated at the elected official, police or fire rate for credited service earned in the applicable elected official, police or fire plan for the member's previous service and at the municipal rate for municipal credited service earned after transfer. This election shall apply only to the calculation of the dollar amount of the benefit and not to the age, service and other eligibility requirements for benefits, which shall be determined by the requirements of the plan into which the member has transferred.

(d) Notwithstanding any other provision of this Title, any member of Plan D, Plan J or Plan X whose benefits have vested under any plan of the Retirement System who was on July 1, 1972 employed, or who was on June 7, 1973 employed in a position covered by a different plan, shall, upon retirement, have the option of having retirement benefits calculated on the basis of total service with the City in either the plan in which retirement benefits became vested or in the plan in which the employee was a member at the time of retirement. In any such case, the calculation of the retirement benefit shall be in accordance with the provisions of § 22-301(3)(a) (Service Retirement Benefits) and § 22-105(6)(a) ("Average Final Compensation").

(e) If any member of Plan D, Plan J or Plan X of the Retirement System is appointed Commissioner or Deputy Commissioner of the Fire or Police Department, the member shall retain membership in the plan covering the member's prior employment.

(f) If any member of Plan J or Plan Y of the Retirement System is appointed to a position

(.1) as a uniformed or investigatory employee in the Police Department other than Commissioner or Deputy Commissioner, or in the District Attorney's Office, the member shall not become a member of the applicable Police Plan (Plan D or Plan B) until after five years' service as a police employee;

(.2) as a uniformed employee in the Fire Department other than Commissioner or Deputy Commissioner, the member shall not become a member of the applicable Fire Plan (Plan X or Plan A) until after five years' service as a fire employee.

Until completion of such five years' service, the member shall retain membership in the plan covering the member's prior employment. Such retained membership in the prior plan shall include remaining in the prior plan for eligibility and benefits calculations for any DROP participation and all other purposes of Section 22-310 of this Title. Nothing in this subsection, however, shall prevent a uniformed or investigatory employee in the Police Department or in the District Attorney's Office from being considered a "Police Employee" or a uniformed employee in the Fire Department from being considered a "Fire Employee" for the purposes of disability benefits under Chapter 22-400 or death benefits under Chapter 22-500.