C.R.S. § 15-5-209

(1) If a trust’s principal place of administration changes after the trust has been registered in this state, the trustee may withdraw that registration by: (a) Filing a notice of release of trust registration statement in the same court in which the last registration statement was filed; and (b) Serving the notice of release upon all persons described in section 15-5-206 (3). (2) The trust registration is deemed released thirty-five days after the filing of the notice of release with the court unless an objection to the release is filed with that court and the objector files a notice to set a hearing on the objection within said period and serves the objection and the notice to set on those persons described in section 15-5-206 (3).