A party or support enforcement agency seeking to modify, or to modify and enforce, a foreign child support order not under the Convention may register that order in this State under sections 1601 through 1608 of this title if the order has not been registered. A petition for modification may be filed at the same time as a request for registration, or at another time. The petition must specify the grounds for modification. (Added 2015, No. 16, § 2, eff. June 1, 2015.)