A local planning authority may at any time make proposals for the alteration, repeal or replacement of a local plan adopted by them and may at any time, with the consent of the Minister, make proposals for the alteration, repeal or replacement of a local plan approved by him.
Without prejudice to subsection (1) above, a local planning authority shall, if the Minister gives them a direction in that behalf with respect to a local plan adopted by them or approved by him, as soon as practicable prepare proposals of a kind specified in the direction, being proposals for the alteration, repeal or replacement of the plan.
The provisions of sections 6(9) to (11), 7, 8 and 9 above shall apply in relation to the making of proposals for the alteration, repeal or replacement of a local plan under this section, and to alterations to a local plan so proposed, as they apply in relation to the preparation of a local plan under the said section 6 and to a local plan prepared thereunder, but as if the reference in section 9(4)(a) to section 4 above were a reference to section 5 above.