You have to hit Ctrl+U to unweld all the points so you can move them. Careful to move only points cause you can unwillingly move some polys if they're unwelded which can be a bad thing, not always, but in most cases
After you've moved all the points that needed relocation, just hit M and OK to merge all the points you previously unwelded.
One more thing. If you're in subpatch mode when you unweld, don't get scared if you're model turns into a lor of oversized dots. Just hit Tab to switch to polygon view while you're working with unwelded points. Hit Tab again after you merge the points and you'll see everything's fine, hopefully
Cheers!