(1) After the effective date of an annexation ordinance, the annexing municipality shall apply all pertinent ordinances to the annexed area, irrespective of any proceedings for judicial review.

(2) In the event that the district court enters a final judgment, as defined in rule 54 (a), Colorado rules of civil procedure, declaring the annexation proceedings void, no acts taken in compliance with or pursuant to the charter, ordinances, or regulations of the annexing municipality shall be voided thereby, even though such acts are not in compliance with applicable county requirements or the requirements of other municipal or quasi-municipal corporations having jurisdiction over the area affected by such judicial proceedings. Such acts shall include, among others, subdivision platting and the construction and occupancy of improvements. A judicial declaration voiding an annexation shall not invalidate the levy and collection of any taxes, license fees, or charges collected or imposed by the annexing municipality prior to such final judgment.

(3) The provisions of subsection (2) of this section shall apply with equal force and validity to judicial review of any annexation proceedings which have affected the boundaries of any county or city and county; except that, within ninety days after the effective date of such a final judgment, the county clerk and recorder of the county or city and county to which the area was attempted to be annexed shall transmit to the county clerk and recorder of the county to which the territory was returned as a result of the judicial determination of the invalidity of the annexation proceedings a copy of each approved subdivision plat, which copy shall then be recorded without charge in the records of the county to which the territory was so returned.

(4) The execution of any final judgment by the district court in any judicial review of an annexation proceeding shall automatically be stayed upon the filing of the record on appeal as provided by law and the Colorado appellate rules, and no application for supersedeas shall be necessary. Such stay shall continue in full force and effect pending final disposition of the proceedings on appeal.