Ohio Rev. Code § 5301.45: Instrument executed and acknowledged upon different sheets.

When a deed, mortgage, lease, or other instrument of writing intended to convey or encumber an interest in real estate is not printed or written on a single sheet, or when the certificate of acknowledgment thereof is not printed or written on the same sheet with the instrument, and such defective conveyance is corrected by the judgment of a court, or by the voluntary act of the parties thereto, such judgment or act shall relate back so as to be operative from the time of filing the original conveyance in the county recorder's office.