4If in the case of any scheme—
(1)a resolution to approve a suspensory provision contained in the scheme is not agreed to by either House of Parliament; or
(2)it has been resolved by either House of Parliament that the scheme or some provision contained therein ought not to come into operation; or
(3)there has in relation to the scheme been given any such undertaking as is mentioned in paragraph three of this Part of this Schedule,
the following provisions shall have effect:—.
(a)if the scheme is a scheme which was prepared or adopted by a local authority or joint committee, it may be modified by the Minister in like manner, and the like further proceedings may be taken thereon, as if the Minister had not approved it;
(b)if the scheme is a scheme which was made by the Minister, a new scheme may be made by him in like manner, and the like proceedings may be taken thereon as if the first mentioned scheme had not been made.