A. Any payment or installment of child support ordered pursuant to any order, judgment, or decree of the district court or administrative order of the Department of Human Services is, on and after the date it becomes past due, a judgment by operation of law. Judgments for past due support shall:

B. A child support judgment shall not become dormant for any purpose, except that it shall cease to be a lien upon real property five (5) years from the date it is filed of record with the county clerk in the county where the property is located, unless the judgment lien is extended in accordance with subsection C of Section 759 of Title 12 of the Oklahoma Statutes.

C. An arrearage payment schedule set by a court or administrative order shall not exceed three (3) years, unless imposition of a payment schedule would be unjust, inequitable, unreasonable, or inappropriate under the circumstances, or not in the best interests of the child or children involved. When making this determination, reasonable support obligations of either parent for other children in the custody of the parent may be considered. If an arrearage payment schedule that exceeds three (3) years is set, specific findings of fact supporting the action shall be made.