1SIn so far as any order, regulation, certificate, declaration or other instrument made, given or executed under any enactment repealed by this Act, or any other thing done under or by virtue of any such enactment, could have been made, given, executed or done under or by virtue of a corresponding provision of this Act, it shall not be invalidated by the repeals effected by section 48 of this Act but, subject to paragraph 3 below, shall have effect as if made, given, executed or done under or by virtue of that corresponding provision.