(2)Notwithstanding anything contained in any judgment, decree or order of any court, tribunal or other authority, any action taken or anything done or purported to have been taken or done at any time during the period specified in column (4) of the Sixth Schedule relating to the provisions as amended by sub-section (1) shall be deemed to be and deemed always to have been, for all purposes, as validly and effectively taken or done as if the amendment made by sub-section (1) had been in force at all material times.