If a party or the child support services agency seeks to modify, or to modify and enforce, a child support order issued in another state but not registered in this state, the party or agency shall register that order in this state in the same manner provided in AS 25.25.601 - 25.25.608. A complaint for modification may be filed at the same time as a request for registration, or later. The pleading must specify the grounds for modification.
Alaska Legal Code