For section 169(1) of the Principal Act substitute —
"(1) In the case of activities of a person which occurred before the commencement of section 163 and in respect of which—
(a) no investigation, inquiry or hearing has been commenced under the repealed provision; or
(b) no proceeding has been taken under the repealed provision—
this Act applies to the extent that there was power in relation to those activities to conduct an investigation, inquiry or hearing or to take a proceeding under the repealed provision.".