Family Code § 5700.105

(a) A tribunal of this state shall apply Chapters 1 through 6 and, as applicable, Chapter 7, to a support proceeding involving:

(1) a foreign support order;

(2) a foreign tribunal; or

(3) an obligee, obligor, or child residing in a foreign country.

(b) A tribunal of this state that is requested to recognize and enforce a support order on the basis of comity may apply the procedural and substantive provisions of Chapters 1 through 6.

(c) Chapter 7 applies only to a support proceeding under the Convention. In such a proceeding, if a provision of Chapter 7 is inconsistent with Chapters 1 through 6, Chapter 7 controls.