Not true. Contrary to what you Indians seem to think, repeating a lie ad nauseam a billion times over doesn’t make it the truth. The UN quickly realized the impracticality of forcing Pakistan to demilitarize first, which is why every resolution after 1949 refers to the McNaughton plan for simultaneous withdrawal of Indian and Pakistani soldiers from both sides of the LoC.
Not that it matters. I’m sure you and your ilk will continue to prattle on endlessly regurgitating the same lies, regardless of how many times the matter is explained to you.