(a) Applicability.--A tribunal of this State shall apply Chapter 71 (relating to general provisions), 72 (relating to jurisdiction), 73 (relating to civil provisions of general application), 74 (relating to establishment of support order or determination of parentage), 75 (relating to enforcement of support order without registration) or 76 (relating to registration, enforcement and modification of support order) and, as applicable, Chapter 77A (relating to support proceeding under convention), to a support proceeding involving any of the following:
(1) A foreign support order.
(2) A foreign tribunal.
(3) An obligee, obligor or child residing in a foreign country.
(b) Discretionary.--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 Chapter 71, 72, 73, 74, 75 or 76.
(c) Limitations.--Chapter 77A applies only to a support proceeding under the convention. In a proceeding, if a provision of Chapter 77A is inconsistent with Chapter 71, 72, 73, 74, 75 or 76, Chapter 77A shall control.