Ohio Revised Code Title III. Counties § 301.06

The board of county commissioners of a new county, created and organized from one or more counties, shall call on the boards of the counties from which such new county was taken for a settlement of the money which remains in the county treasuries of such counties.  The boards of such old counties, when called on by the board of the new county, shall settle with it within three months thereafter, and give orders on the old county treasurers, in favor of the new county treasurer, for the amount due such new county, as provided in section 301.05 of the Revised Code, and the old treasurers shall pay such amount to the treasurer of the newly erected county.