S.C. Code Ann. § 20-7-1136 – Filing of order in registering tribunal of this State; recognition and enforcement

(A) A support order or income-withholding order issued in another state is registered when the order is filed in the registering tribunal of this State.
(B) A registered order issued in another state is enforceable in the same manner and is subject to the same procedures as an order issued by a tribunal of this State.
(C) Except as otherwise provided in this part, a tribunal of this State shall recognize and enforce, but may not modify, a registered order if the issuing tribunal had jurisdiction.