(i) who is a twenty-seven year participant in the age fifty-five retirement program (as defined in paragraph twelve of subdivision a of section six hundred four-i of this chapter), and

(ii) who becomes subject to the provisions of article fifteen of this chapter after the effective date of this paragraph, shall contribute to a retirement system pursuant to section six hundred thirteen of this chapter until he or she has completed twenty-seven years of credited service. 1-b. The provisions of this subdivision shall not apply to a New York city uniformed correction/sanitation revised plan member (as defined in subdivision twenty-five of section five hundred one of this chapter), an investigator revised plan member (as defined in subdivision twenty-seven of section five hundred one of this chapter) or a New York city revised plan member (as defined in subdivision m of section six hundred one of this chapter). 2. No contribution made to a retirement system by an eligible member prior to the eligible member's cessation date shall be refunded, except as otherwise allowable pursuant to article fourteen or fifteen of this chapter. 3. Nothing in this subdivision b shall affect the obligation of an eligible member to repay any contributions previously refunded pursuant to article fourteen, fifteen or fifteen-D of this chapter in the event such person rejoins a retirement system. Nothing in this subdivision shall affect the obligation of an eligible member to pay such amounts as may be required by section five hundred seventeen, six hundred nine or six hundred thirteen of this chapter or by any other provision of law for service rendered prior to such member's date of membership at a time such member was not a member of a retirement system.