Ya, man there are a lot of people in this boat, it’s a major bug that is not persisting in 9.0.1. hopefully your not too far into the project but just export an xml and reinstall 8.2 and import the xml. They can actually both installed on the system at the same time.
Sucks but I’m sure they will have it fixed soon. There are a ton of people complaining over on the adobe forums.
This thread is updating regularly:
https://forums.adobe.com/thread/1881838?tstart=0