Colo. Rev. Stat. § 16-4-108
Once a bond has been executed and the person released from custody thereon, whether a charge is then pending or is thereafter filed or transferred to a court of competent jurisdiction, the original bond shall continue in effect until final disposition of the case in the trial court. If a charge filed in the county court is dismissed and the district attorney states on the record that the charge will be refiled in the district court or that the dismissal by the county court will be appealed to the district court, the county court before entering the dismissal shall fix a return date, not later than sixty-three days thereafter, upon which the defendant must appear in the district court and continue the bond. Any bond continued pursuant to this section is subject to the provisions of section 16-4-109.
C.R.S. § 16-4-108