It's a bug that a few folks were reporting.  It appears it is a false message - the returns weren't actually changed.

So is there an update to fix this bug?  Where did you receive your information?  I am new to posting on this community feed.

There were various posts here over the last few days.  It's not a bad idea to stop in and scan the posts here periodically to let you know about issues folks are having with the software.

I reported the bug on Thursday evening and by Friday morning it was sent to development, I would expect to see a fix in this weeks update (Thursday).

I agree, this is an exceptional year on all the changes the government is making during tax season.