SECTION 1. Subsection (2) of Section 5 of Chapter 32 of  the General Laws,  as appearing in the 2010 Official Edition, is hereby amended by striking  paragraph (e)  and inserting  in place thereof the following paragraph:-

(e) A person who has received regular compensation from 2 or more governmental units concurrently within five years of the effective date of retirement, shall, upon retirement, receive a superannuation retirement allowance to become effective on the date of retirement that is equal to the sum of the benefits calculated pursuant to this section as though the member were retiring solely from each governmental unit; provided, however, that notwithstanding paragraph (c) of subdivision (8) of section 3, each system shall pay the superannuation retirement allowance attributable to membership in that system to the member; and provided further, that this section shall not apply to any member who has vested in 2 or more systems as of January 1, 2010.