(a) A tribunal of Georgia may not modify a convention child support order if the obligee remains a resident of the foreign country where the support order was issued unless:

(1) The obligee submits to the jurisdiction of a tribunal of Georgia, either expressly or by defending on the merits of the case without objecting to the jurisdiction at the first available opportunity; or

(2) The foreign tribunal lacks or refuses to exercise jurisdiction to modify its support order or issue a new support order.

(b) If a tribunal of Georgia does not modify a convention child support order because the order is not recognized in this state, subsection (c) of Code Section 19-11-184.3 applies.