Ohio Rev. Code § 3109.46
If the court to which notice is sent under section 3109.44 of the Revised Code is a juvenile court that issued a custody order described in that section, the court shall retain jurisdiction over the order. If the court to which notice is sent is not a juvenile court but the court issued a custody order described in that section, the court shall transfer jurisdiction over the custody order to the juvenile court of the county in which the child has a residence or legal settlement.
On receipt of the notice in cases in which the custody order was issued by a juvenile court or after jurisdiction is transferred, the juvenile court with jurisdiction shall terminate the custody order.
The termination order shall be treated as a complaint filed under section 2151.27 of the Revised Code alleging the child subject of the custody order to be a dependent child. If a juvenile court issued the terminated custody order under a prior juvenile proceeding under Chapter 2151. of the Revised Code in which the child was adjudicated an abused, neglected, dependent, unruly, or delinquent child or a juvenile traffic offender, the court shall treat the termination order as a new complaint.
R.C. § 3109.46