Okla. Stat. tit. 43, § 43-601-202
Duration of jurisdiction
Personal jurisdiction acquired by a tribunal of this state in a
proceeding under this act or other law of this state relating to a
support order continues as long as a tribunal of this state has
continuing, exclusive jurisdiction to modify its order or continuing
jurisdiction to enforce its order as provided by Sections 601-205,
601-206, and 601-211 of this title.