Colo. Rev. Stat. § 14-5-614
Within thirty days after issuance of a modified child support order, the party obtaining the modification shall file a certified copy of the order with the issuing tribunal that had continuing, exclusive jurisdiction over the earlier order, and in each tribunal in which the party knows the earlier order has been registered. A party who obtains the order and fails to file a certified copy is subject to appropriate sanctions by a tribunal in which the issue of failure to file arises. The failure to file does not affect the validity or enforceability of the modified order of the new tribunal having continuing, exclusive jurisdiction.
C.R.S. § 14-5-614
COMMENT
For the act to function properly, the prevailing party in a proceeding that modifies a controlling order must inform the original issuing tribunal about its loss of continuing, exclusive jurisdiction over its child-support order. Thereafter, the original tribunal may not modify, or review and adjust, the amount of child support. Notice to the issuing tribunal and other affected tribunals that the continuing, exclusive jurisdiction of the former controlling order has been modified is crucial to avoid the confusion and chaos of the multiple-order system UIFSA replaced.
The new issuing tribunal has authority to impose sanctions on a party who fails to comply with the requirement to give notice of a modification to all interested tribunals. Note, however, that failure to notify a displaced tribunal of the modification of its order does not affect the validity of the modified order.