(1)Where the Welsh Ministers grant a local housing authority’s application under section 21, they must issue in writing an altered direction which—
(a)states the date on which it is to cease to have effect (being the date specified in the authority’s application under section 20(2)(f)), and
(b)in all other respects is identical to the direction in respect of which the application was made (the “replaced direction”).
(2)A direction issued under this section has effect as from the date on which the replaced direction ceases to have effect.