Indiana Code Title 5. State and Local Administration § 5-10-5.5-18

Sec. 18. Any participant who terminates his service as an officer before accumulating fifteen (15) years of creditable service may, in the manner and under the conditions provided in the public employees' retirement law, again become a member of the public employees' retirement fund.  Upon payment of contributions and interest required by the board, the withdrawing participant shall be entitled to transfer creditable service standing to his credit under this chapter to his credit under the public employees' retirement law.