Ariz. Rev. Stat. § 46-408
A. The assignment under section 46-407 is subject to all of the following:
7. The assignment applies to arrearages provided in the court order subject to the following priorities:
B. Notwithstanding subsection A, paragraph 7 of this section, for distributions that occur or should have occurred beginning October 1, 1997, the department shall distribute support payments as prescribed in title IV-D of the social security act and its implementing regulations as follows:
H. For the purposes of this section: