(3)[ On and with effect from the date of publication of such notification, all the Councillors including the Chairperson and Vice-Chairperson of the Municipality shall be deemed to have vacated their office as such and the election to constitute the Municipality in accordance with the provisions of this Act shall be completed before the expiration of a period of six months from the said date :Provided that where the remainder of the period of which the dissolved Municipality would have continued is less than six months, it shall not be necessary to hold any election under this sub-section for constituting the Municipality for such period.]