O.C.G.A. § 19-11-174 (2019)

(a) Except as otherwise provided in Code Section 19-11-184.6, if a foreign country lacks or refuses to exercise jurisdiction to modify its child support order pursuant to its laws, a tribunal of Georgia may assume jurisdiction to modify the child support order and bind all individuals subject to the personal jurisdiction of the tribunal whether the consent to modification of a child support order otherwise required of the individual pursuant to Code Section 19-11-170 has been given or whether the individual seeking modification is a resident of this state or of the foreign country.

(b) An order issued by a tribunal of this state modifying a foreign child support order pursuant to this Code section is the controlling order.