No, BUT if you call into question the legitimacy of one set of borders determined by treaty, you call into question ALL the borders determined by that treaty.

If we are talking about the borders that the UN established in the partition plan, I am not the one who calls their legitimacy into question. It is the government of Israel (as well as you, it would appear) who calls them into question.

I think adhering to the UN partition plan borders is an excellent idea.