Procedure to Register Child-Support Order of Another

State for Modification. A party or support enforcement agency seeking to modify, or to modify and enforce, a child-support order issued in another state shall register that order in this state in the same manner provided in §§ 35601 through 35608 if the order has not been registered. A petition for modification may be filed at the same time as a request for registration, or later. The pleading must specify the grounds for modification.