Doing this the first time it popped up a week ago when I tried to update my file really screwed up my file. So I dumped the file and restored a backup and avoided doing the reauthorization.
Then I get a notice that Quicken has an update that fixes this problem. So dummy me believes it and does the update then tried the reauthorization again. My file was FUBAR again.
When it comes to reauthorization, I'll be checking the block "remind me next time" until it's not there any more. Then I'm not sure what I will do. Probably look for an alternative to Quicken. I can't figure out how to make all the manual changes to fix the problem.