Changes in proposed greenbelt boundaries affecting a given area, and occurring at the consultative draft stage of local plans and or pre-map stage and the formal deposit of those plans, and or between the deposit copies and proposals subsequently issued by county and local planning authorities by way of desired changes to deposit copies, militate against, and may totally inhibit in relation to that area, emergence within the meaning of the national doctrine most recently propagated in paragraph er within erm paragraph thirty two of the revised version of P P G number One.