16In dealing with a complaint under section 36(2) of the 1984 Act or a request for an assessment under section 42 of this Act, the Commissioner shall have regard to the provisions from time to time applicable to the processing, and accordingly—
(a)in section 36(2) of the 1984 Act, the reference to the old principles and the provisions of that Act includes, in relation to any time when the new principles and the provisions of this Act have effect, those principles and provisions, and
(b)in section 42 of this Act, the reference to the provisions of this Act includes, in relation to any time when the old principles and the provisions of the 1984 Act had effect, those principles and provisions.