(a) Notwithstanding section 141 of chapter 47 of the acts of 2017, a member who made an election under section 90G¾ of chapter 32 of the General Laws prior to the enactment of section 28 of chapter 47 of the acts of 2017, may, within 60 days of the effective date of this act, repeal such election and be credited with any years of service subsequent to such election; provided, however, that such member: (i) has maintained continuous service since making such election; and (ii) is a member continuing in service as of the effective date of this act; provided, further, that such service shall not be credited until such member has paid into the annuity savings fund of such system, in 1 sum or in installments, upon such terms and conditions as the board may prescribe, makeup payments, for each year of creditable service sought, of an amount equal to the per cent of the regular annual compensation of the member when said member entered the retirement system.

(b)  Not later than 90 days after the effective date of this section, the state retirement board shall: (i) assess whether Internal Revenue Service letters of determination or a ruling on whether subsection (a) may be implemented without impairing the compliance of either or both the optional retirement plan and the state employees’ retirement system with the Internal Revenue Code of 2022 is necessary; and (ii) request, if necessary, letters of determination or ruling from the Internal Revenue Service; provided, however, that if the state retirement board determination or ruling is necessary, subsection (a) shall not take effect unless and until the Internal Revenue Service issues a favorable ruling or determination that determines that the transfers described in this section will not result in non-compliance of either or both the optional retirement program and the state employees’ retirement system with the Internal Revenue Code.