In so far as any regulation, order, licence or other instrument made or issued, or having effect as if made or issued, under any enactment repealed by this Act or any other thing done or deemed to have been done under any such enactment, could have been made, issued or done under a corresponding provision of this Act it shall not be invalidated by the repeals effected by section 39(5) of this Act, but shall have effect as if made, issued or done under that corresponding provision.