Ohio Rev. Code Ann. § 145.2912
(A) If the conditions described in division (B) of section 145.2910 of the Revised Code are met and a person who is a member or former member of the public employees retirement system but not a current contributor and who is not receiving a pension or benefit from the public employees retirement system elects to receive credit under the Cincinnati retirement system for service for which the person contributed to the public employees retirement system or purchased or obtained as military service credit, the public employees retirement system shall transfer the amounts specified in divisions (A) (4)(a) and (b) of this section to the Cincinnati retirement system. A person may obtain credit if all of the following conditions are met:
(4)
(a) If the person has contributions on deposit with the public employees retirement system, the public employees retirement system, for each year of service credit, transfers to the Cincinnati retirement system the sum of the following:
(b) If the person has received a refund of accumulated contributions to the public employees retirement system, the public employees retirement system, for each year of service credit, transfers to the Cincinnati retirement system the sum of the following: