2.Limits on subrogation. When payment of public assistance for the benefit of a dependent child has ceased, that child, or a person having the custody of the child named in the order, may pursue any support action or administrative remedy to secure payment of any support arrearage that accrued before or after the period of receiving public assistance and that is not part of the debt under section 2301. The department may not be subrogated to this right. [1995, c. 694, Pt. B, §2(NEW); 1995, c. 694, Pt. E, §2(AFF).]