The current 3.0.1 version is too unstable for me: Users are disappearing and too many error messages are send to my users.
How do make sure the current user base is able to login to my site when I downgrade?
On my test site I noticed I can not have PR 2.0.21 and PR 3.0.1 installed together.
Are the users stored in the core database or should I make an export?