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

769.209 Credit for payments. A tribunal of this state shall credit amounts collected for a particular period pursuant to any child support order against the amounts owed for the same period under any other child support order for support of the same child issued by a tribunal of this state, another state, or a foreign country.