3Subject to the following provisions of this Schedule, where by virtue of paragraph 2 above the old development plan for any district is treated as being comprised in a development plan for that district and there is a conflict between any of its provisions and those of the structure plan for that district, the provisions of the structure plan shall be taken to prevail for the purposes of Part III, IV, V, VI and VIII of the principal Act, Parts II and VI of this Act and Schedule 5 to this Act.