Could you please post the exact law which states this?? I haven't been able to find it anywhere! Besides, the "borders" you speak of are not and neber were "borders". What you refer to are nothing more than "cease fire lines" or "armistice lines". Per the Oslo Accords, the Plestininans and Israel agreed that the permanent borders would be determined through direct negotiations. So, there is no "renegotiation" involved.
from the article: IDF to deploy super-armored tanks along Gaza border