N.H. Rev. Stat. Ann. § 546-B:2-a

I. A tribunal of this state shall apply Articles 1 through 6 and, as applicable, Article 7, to a support proceeding involving:

(a) A foreign support order;

(b) A foreign tribunal; or

(c) An obligee, obligor, or child residing in a foreign country.

II. 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 Articles 1 through 6.

III. Article 7 applies only to a support proceeding under the Convention. In such a proceeding, if a provision of Article 7 is inconsistent with Articles 1 through 6, Article 7 controls.