Utah Code § 81-8-202: Duration of personal jurisdiction.

Personal jurisdiction acquired by a tribunal of this state in a proceeding under this chapter 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 the tribunal's order or continuing jurisdiction to enforce the tribunal's order as described in Sections 81-8-205, 81-8-206, and 81-8-211.