Notwithstanding any other provision of law, in any proceeding where the court has made an order requiring the payment of child support to a person having custody of a child and the child support is subsequently assigned to the county pursuant to Section 11477 of the Welfare and Institutions Code or the person having custody has requested the local child support agency to provide child support enforcement services pursuant to Section 17400, the local child support agency may issue a notice directing that the payments shall be made to the local child support agency, another county office, or the State Disbursement Unit pursuant to Section 17309. The notice shall be served on both the support obligor and obligee in compliance with Section 1013 of the Code of Civil Procedure. The local child support agency shall file the notice in the action in which the support order was issued.