(a) The case was being enforced by the district attorney on October 1, 1985; and
(b) The case involves any arrearages assigned to the state or any other state.
(2) This section does not apply when the obligor or beneficiary of the support judgment or order is receiving any of the following:
(a) Public assistance; or
(b) Care, support or services under ORS 418.015. [1985 c.671 §51a; 2003 c.73 §40; 2003 c.572 §12; 2003 c.576 §301]