(1) Within one year from the date the division of child support (DCS) serves a notice of retained support, the person, firm, corporation, association, political subdivision or any officer or agent thereof may petition DCS for a hearing, upon a showing of any of the grounds listed in RCW 4.72.010 or CR 60.

(2) A copy of the objection must be served by first class mail on the district field office of DCS.

(3) The filing of the petition does not stay any collection action that DCS has taken, but the debtor may petition the secretary or the secretary's designee for an order staying collection action pending final decision of the secretary or the secretary's designee or the courts on an appeal made under chapter 34.05 RCW.

(4) Any money held or taken by collection action before any such stay and any support money claimed by the department, including amounts to be received in the future, to which the department may have a claim, must be held in trust pending the final decision and appeal, if any, to be disbursed in accordance with the final decision.

(5) If someone files a petition for a hearing, the department serves the notice of hearing on the appellant, the appellant's attorney, or other designated representative by first class mail.

(6) The department notifies the appellant that the appellant must notify the department of the appellant's mailing address at the time the petition is filed and also of any change of address after filing the petition. Mailing by first class mail to the last address provided by the appellant constitutes service under chapters 74.20A and 34.05 RCW.