Ohio Rev. Code § 3121.36
The termination of a court support order or administrative child support order does not abate the power of any court or child support enforcement agency to collect any overdue and unpaid support or arrearage owed under the terminated support order or the power of the court to punish any person for a failure to comply with, or to pay any support as ordered in, the terminated support order. The termination does not abate the authority of the court or agency to issue any notice described in section 3121.03 of the Revised Code or to issue any applicable order as described in division (C) or (D) of section 3121.03 of the Revised Code to collect any overdue and unpaid support or arrearage owed under the terminated support order. If a notice is issued pursuant to section 3121.03 of the Revised Code to collect the overdue and unpaid support or arrearage, the amount withheld or deducted from the obligor's personal earnings, income, or accounts shall be rebuttably presumed to be at least equal to the amount that was withheld or deducted under the terminated child support order. A court or agency administering the child support order may consider evidence of household expenditures, income variables, extraordinary health care issues, and other reasons for deviation from the presumed amount.
R.C. § 3121.36