(1) This article applies to a pre-commencement provision which -

(a) has been designated by the Authority in accordance with article 4;

(b) could, with the modifications (if any) made to it under article 5, be made in whole or in part under a provision of the Act conferring power on the Authority to make rules; and

(c) has not been amended or revoked at any time between its designation and commencement.

(2) Where a pre-commencement provision -

(a) has been designated by the Authority in accordance with article 4; and

(b) has been amended at any time between its designation and commencement by a further such provision which has itself been so designated,

this article applies to the original provision, subject to that amendment.

(3) A pre-commencement provision to which this article applies has effect after commencement -

(a) with such modifications (if any) as may be made under article 5; and