(2)Notwithstanding anything contained in sub-section (1), every detention order which has been confirmed under Section 11 before the commencement of the Preventive Detention (Second Amendment) Act, 1952 (61 of 1952), shall, unless a shorter period is specified in the order, continue to remain in force until the 1st day of April, 1953, or until the expiration of twelve months from the date of detention, whichever period of detention expires later.