That is exactly my experience too. Nothing about the edited version being theirs in my contract, but in the revision letter it did indeed say that. But any edits I did were still MY words only, so no way they could ever enforce such silliness. (Especially since the original contract did not say anything like that)
Did anyone cite a specific clause in the contract to back this up? I checked mine but didn't find anything that would lead me to believe the edited version won't be reverted to me. But I was surprised about the basket accounting clause too. So much to learn, no matter how long you've been in this biz!