This section is affected by 2009 Wis. Act 321 effective the date stated in the notice published in the Wisconsin Administrative Register under s. 769.904 to read:

769.604 Choice of law. (1) Except as otherwise provided in sub. (4), the law of the issuing state or foreign country governs all of the following:

(a) The nature, extent, amount, and duration of current payments under a registered support order.

(b) The computation and payment of arrearages and accrual of interest on the arrearages under the support order.

(c) The existence and satisfaction of other obligations under the support order.

(2) In a proceeding for arrearages under a registered support order, the statute of limitations under the laws of this state or of the issuing state or foreign country, whichever is longer, applies.

(3) A responding tribunal of this state shall apply the procedures and remedies of this state to enforce current support and collect arrearages and interest due on a support order of another state or a foreign country that is registered in this state.

(4) After a tribunal of this state or another state determines which is the controlling order and issues an order consolidating arrearages, if any, a tribunal of this state shall prospectively apply the law of the state or foreign country issuing the controlling order, including its law on interest on arrearages, on current and future support, and on consolidated arrearages.