Section 4: Amended and substituted enactments.

(1) A reference in an enactment to another enactment shall, if the other enactment has been amended, be construed as a reference to the other enactment as amended.
(2) Where an enactment is repealed and another enactment is substituted for it, then-
(a)
the repealed enactment shall remain in force until the substituted enactment comes into force;
(b)
any reference to the repealed enactment shall, after the substituted enactment comes into force, be construed as a reference to the substituted enactment;
(c) any subsidiary instrument in force by virtue of the repealed enactment shall, so far as the instrument is not inconsistent with the substituted enactment, continue in force as if made in pursuance of the substituted enactment.