(1) In this section and section 151 "repealed enactments" means the enactments repealed or revoked under section 149.

(2) If, and in so far as a provision of this Part operates, as and from the day appointed under section 152, in substitution for a provision of the repealed enactments, any order or regulation made or having effect as if made, and anything done or having effect as if done, under the substituted provision before that day is to be treated on and from that day as if it were an order or regulation made or a thing done under the provision of this Part which so operates.