Ohio Rev. Code Ann. § 145.2911
(B) A member of the public employees retirement system who has contributions on deposit with, but is no longer contributing to, the Cincinnati retirement system shall, in computing years of service credit, be given credit for service credit earned under the Cincinnati retirement system or purchased or obtained as military service credit if all of the following conditions are met:
(4) For each year of service, the Cincinnati retirement system transfers to the public employees retirement system the sum of the following:
(C) A member of the public employees retirement system with at least eighteen months of contributing service credit with the public employees retirement system who has received a refund of the member's contributions to the Cincinnati retirement system may obtain credit for service credit earned under the Cincinnati retirement system or purchased or obtained as military service credit if all of the following conditions are met:
(4) For each year of service, the public employees retirement system receives the sum of the following:
(a) An amount, paid by the member, equal to the sum of the following:
(b) An amount, transferred by the Cincinnati retirement system to the public employees retirement system, equal to the sum of the following:
(H) Service credit purchased or otherwise obtained under this section shall be considered the equivalent of Ohio service credit. The public employees retirement system shall withdraw the credit and refund all amounts paid or transferred under this section if either of the following occurs: