427.2. In the case provided for in section 427, the secretary-general of the regional board shall, within fifteen days preceding the date on which the order takes effect, convene the members of the parents’ committee who are delegates of the school committees that remain under the jurisdiction of the regional board to proceed to the election of the chairman and the representative of the parents’ committee of the regional board. They shall remain in office until the date on which they are replaced by persons elected pursuant to section 52.1.