It was not. If you say 'withdrawal from territorries', that can only mean a complete withdrawal.
It was.
Prof. Eugene V. Rostow, an author of U.N. Resolution 242, U.S. Undersecretary of State for Political Affairs (1966-1969):
"Security Council Resolutions 242 and 338... rest on two principles, Israel may administer the territory
until its Arab neighbors make peace; and when peace is made, Israel should withdraw to 'secure and recognized borders', which
need not be the same as the Armistice Demarcation Lines of 1949."
Arthur J. Goldberg, an author of U.N. Resolution 242, U.S. Ambassador to the United Nations (1965-1967):
"It calls for respect and acknowledgment of the sovereignty of every state in the area. Since Israel never denied the sovereignty of its neighbouring countries, this language obviously requires those countries to acknowledge Israel's sovereignty."
"The notable omissions in regard to withdrawal are the word 'the' or 'all' and 'the June 5, 1967 lines' the resolution speaks of withdrawal from occupied territories,
without defining the extent of withdrawal....There is lacking a declaration requiring Israel to withdraw from all of the territories occupied by it on, and after, June 5, 1967... On certain aspects, the Resolution is less ambiguous than its withdrawal language. Resolution 242 specifically calls for termination of all claims or states of belligerency and respect for and acknowledgment of the sovereignty of every State in the area. The Resolution also specifically endorses free passage through international waterways...The efforts of the Arab States, strongly supported by the USSR, for a condemnation of Israel as the aggressor and for its withdrawal to the June 5, 1967 lines, failed to command the requisite support..."
- Columbia Journal of International Law, Vol 12 no 2, 1973
Lord Caradon, an author of U.N. Resolution 242, U.K. Ambassador to the United Nations (1964-1970):
"We didn't say there should be a withdrawal to the '67 line; we did not put the 'the' in, we did not say all the territories, deliberately.. We all knew - that the boundaries of '67 were not drawn as permanent frontiers, they were a cease-fire line of a couple of decades earlier... W
e did not say that the '67 boundaries must be forever."
MacNeil/Lehrer Report - March 30, 1978