(a) Any member who on June 30, 1998, was entitled to remain a member of the District Attorneys' Retirement System while employed in a position covered by Chapter 2 of this title pursuant to the provisions of Code Section 47-13-40.1, as such Code section appeared on June 30, 1998, shall have the same privileges with regard to this retirement system. This Code section shall not apply to any other member of this retirement system.

(b) Any person who became a member of this retirement system pursuant to the operation of Code Section 47-23-40 and who, prior to becoming a member of a predecessor retirement system, was a member of the Employees' Retirement System of Georgia may elect to transfer his or her membership from this retirement system to the Employees' Retirement System of Georgia. Any person desiring to transfer membership shall notify the board of this retirement system and the board of trustees of the Employees' Retirement System of Georgia not later than December 31, 2000. Upon receipt of such notice, the board of trustees of this retirement system shall transfer to the board of trustees of the Employees' Retirement System of Georgia all employer and employee contributions paid by or on behalf of such member, together with regular interest thereon.