>It is not at all surprising for one party to make changes without highlighting. I've even seen track changes on a word document disabled, changes made, and the

>It is not at all surprising for one party to make changes without highlighting. I've even seen track changes on a word document disabled, changes made, and then reenabled so as to intentionally hide word changes. I'm sure it happens. This says nothing about whether these actions would hold up in court, though.