Speaking from the non-prior side but still having to go through the application process....
If it is a huge difference in overall GPA, i.e. .2 or more, then it is probably good to disclose that info.
If it is minute, .01 or .02, then in the grand scheme of things it will not matter so just go on with your life.
However, this is all negated if you missing transcript actually boosts your overall GPA; in which case I do not know why you would even ask.........but I am assuming that it hurts your GPA