Provided that: (a) all determinations, agreements and awards for the pay ment of compensation in respect of any such property for any period of requisition before the said date and in force immediately before the said date, shall continue to be in force and shall apply to the payment of compensation in respect of that property for any period of requisition as from the said date; (b) anything done or any action taken (including any orders, notifications or rules made or issued) by the Central Government or by any officer or authority to whom powers in this behalf have been delegated by that Government, in exercise of the powers conferred by or under Chapter VI of the Defence of India Act, 1962, shall, in so far as it is not inconsistent with the provisions of this Act, be deemed to have been done or taken in the exercise of the powers conferred by or under this Act as if this section was in force on the date on which such thing was done or action was taken.