17(1)
Where an Act repeals a previous enactment and substitutes provisions for the enactment repealed, the repealed enactment remains in force until the substituted provisions come into force.
17(2)
Where an Act repeals and re-enacts, with or without modification, a previous enactment then, unless the contrary intention appears,—
(a) any reference in any other enactment to the enactment so repealed shall be construed as a reference to the provision re-enacted;
(b) in so far as any subordinate legislation made or other thing done under the enactment so repealed, or having effect as if so made or done, could have been made or done under the provision re-enacted, it shall have effect as if made or done under that provision.