A party or support enforcement agency seeking to modify, or to modify and enforce, a child-support order issued in another state shall register that order in this state in the same manner provided in sections 601 through 608 if the order has not been registered. A petition for modification may be filed at the same time as a request for registration or later. The pleading must specify the grounds for modification.

    A tribunal of this state may enforce a child-support order of another state registered for purposes of modification, in the same manner as if the order had been issued by a tribunal of this state, but the registered support order may be modified only if the requirements of section 611 or 613 have been met.

    (1) If section 613 does not apply, upon petition a tribunal of this state may modify a child-support order issued in another state that is registered in this state if, after notice and hearing, the tribunal finds that either of the following applies:

    (a) The following requirements are met:

    (i) Neither the child, nor the obligee who is an individual, nor the obligor resides in the issuing state.

    (ii) A petitioner who is a nonresident of this state seeks modification.

    (iii) The respondent is subject to the personal jurisdiction of the tribunal of this state.

    (b) This state is the residence of the child, or a party who is an individual is subject to the personal jurisdiction of the tribunal of this state, and all of the parties who are individuals have filed consents in a record in the issuing tribunal for a tribunal of this state to modify the support order and assume continuing, exclusive jurisdiction.

    (2) Modification of a registered child-support order is subject to the same requirements, procedures, and defenses that apply to the modification of an order issued by a tribunal of this state, and the order may be enforced and satisfied in the same manner.

    (3) A tribunal of this state may not modify any aspect of a child-support order that may not be modified under the law of the issuing state, including the duration of the obligation of support. If 2 or more tribunals have issued child-support orders for the same obligor and same child, the order that controls and must be so recognized under section 207 establishes the aspects of the support order that are nonmodifiable.

    (4) In a proceeding to modify a child-support order, the law of the state that is determined to have issued the initial controlling order governs the duration of the obligation of support. The obligor's fulfillment of the duty of support established by that order precludes imposition of a further obligation of support by a tribunal of this state.

    (5) On the issuance of an order by a tribunal of this state modifying a child-support order issued in another state, the tribunal of this state becomes the tribunal having continuing, exclusive jurisdiction.

    (6) Notwithstanding subsections (1) through (5) and section 201(1), a tribunal of this state retains jurisdiction to modify an order issued by a tribunal of this state if both of the following apply:

    (a) One party resides in another state.

    (b) The other party resides outside the United States.

    If a child-support order issued by a tribunal of this state is modified by a tribunal of another state that assumed jurisdiction under the uniform interstate family support act, all of the following apply:

    (a) A tribunal of this state may enforce its order that was modified only as to arrears and interest accruing before the modification.

    (b) A tribunal of this state may provide appropriate relief for violations of its order that occurred before the effective date of the modification.

    (c) A tribunal of this state shall recognize the modifying order of the other state, upon registration, for the purpose of enforcement.

    (1) If all of the parties who are individuals reside in this state and the child does not reside in the issuing state, a tribunal of this state has jurisdiction to enforce and to modify the issuing state's child-support order in a proceeding to register that order.

    (2) A tribunal of this state exercising jurisdiction under this section shall apply the provisions of articles 1 and 2, this article, and the procedural and substantive law of this state to the proceeding for enforcement or modification. Articles 3, 4, 5, 7, and 8 do not apply.

    Within 30 days after issuance of a modified child-support order, the party obtaining the modification shall file a certified copy of the order with the issuing tribunal that had continuing, exclusive jurisdiction over the earlier order, and in each tribunal in which the party knows the earlier order has been registered. A party who obtains the order and fails to file a certified copy is subject to appropriate sanctions by a tribunal in which the issue of failure to file arises. The failure to file does not affect the validity or enforceability of the modified order of the new tribunal having continuing, exclusive jurisdiction.