10The repeal by the Act of 1968 of the provisions of Part II of the Act of 1962 relating to the designation of land as subject to compulsory acquisition and to land so designated (which are accordingly not reproduced in Schedule 5 to this Act) shall not affect proposals for alterations or additions to a development plan submitted under section 6 of that Act before 1st April 1969, and the powers of the Secretary of State in relation to such proposals shall continue to be exercisable as if those provisions had not been repealed and had been reproduced in that Schedule.