No proceeding in any court of justice in an action or special proceeding pending therein is affected by a vacancy in the office of all or any of the judges thereof.
Mont. Code Ann. § 3-1-311, under General Rules Regarding Procedure.
Mont. Code Ann. § 3-1-311
No proceeding in any court of justice in an action or special proceeding pending therein is affected by a vacancy in the office of all or any of the judges thereof.