The Committee on District Courts, after consultation with the Executive Secretary of the Supreme Court, shall determine the methods for processing, retention and reproduction of court records and all other records required by statute to be retained in the district courts and for records retained in the office of the magistrate. The provisions for retention and destruction of records contained in §§ 16.1-117, 16.1-118 and 16.1-118.1 shall apply to court records in district court cases in which a final disposition was entered before January 1, 1985.