Ohio Rev. Code § 2109.60: Probate court may send case to the court of common pleas.

When a proceeding set forth in section 2109.59 of the Revised Code is pending in the probate court, the court, on motion of any party or on the court's own motion, may transfer the cause to the court of common pleas, and the court of common pleas shall hear, settle, and determine all issues as provided in that section. In case of the transfer, the probate court shall prepare a transcript of the proceedings in the cause, so far as it has progressed, that, with the petition and other papers in the proceedings, shall be filed with the clerk of the court of common pleas.