(1) This Part extends to apply to a retail shop lease that was entered into:
(a) before the commencement of section 7; or
(b) under an option granted or agreement made before the commencement of section 7;
but only if this Act would have applied to the lease if it had been entered into after the commencement of section 7.
(2) This Part does not apply to conduct that occurred before the commencement of this section.