5. If during the pre-commencement period the employer gave notice in writing to the trustees of an Article 16 scheme that he intended to propose alternative arrangements in respect of the scheme, then these Regulations shall apply—
(a)as if that notice had been given under regulation 9(1)(a) at a permitted notice time (within the meaning of that regulation);
(b)as if the approval period for the purposes of regulation 9(1)(b) were the period of 6 months beginning with the date on which the notice was given, and
(c)in any case where the employer gave notice in writing to the trustees before the commencement date that he was not proceeding with those proposals, as if regulation 7(2)(d) were omitted.