Colo. Rev. Stat. § 14-5-609
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 sections 14-5-601 through 14-5-608 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.
C.R.S. § 14-5-609
This section is similar to former § 14-5-110 as it existed prior to 1993.
COMMENT
Sections 609 through 614 deal with situations in which it is permissible for a registering state to modify the existing child-support order of another state. The first step for modification of another state's child-support order is registration in the responding tribunal under Sections 601 to 604. In some situations, this may also involve identification of the controlling order. A petitioner wishing to register a support order of another state for purposes of modification must conform to the general requirements for pleadings in Section 311, and follow the procedure for registration set forth in Section 602. If the tribunal has the requisite personal jurisdiction over the parties and may assume subject matter jurisdiction as provided in Sections 611 or 613, modification may be sought independently, in conjunction with registration and enforcement, or at a later date after the order has been registered and enforced if circumstances have changed.