S.C. Code Ann. § 63-17-3020: Continuing, exclusive jurisdiction.

Personal jurisdiction acquired by a tribunal of this State in a proceeding under this article 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 63-17-3050, 63-17-3060, and 63-17-3110.