If an action for divorce, dissolution of marriage, or legal separation, or an action under section 2151.231 or 2151.232 of the Revised Code requesting an order requiring the payment of child support and provision for the health care of a child, has been filed in a court of common pleas and a question as to the existence or nonexistence of a parent and child relationship arises, the court in which the original action was filed shall retain jurisdiction to determine the existence or nonexistence of the parent and child relationship without an administrative determination being requested from a child support enforcement agency.
If a juvenile court or other court with jurisdiction under section 2101.022 or 2301.03 of the Revised Code issues a support order under section 2151.231 or 2151.232 of the Revised Code relying on a presumption under section 3111.03 of the Revised Code, the juvenile court or other court with jurisdiction that issued the support order shall retain jurisdiction if a question as to the existence of a parent and child relationship arises.
R.C. § 3111.381