I still have the old data from CoR (Ver. 0.85 old version before it got re-branded) and I want to know if I can transfer my saves to this new one?
Yes you can do that, the file path has remained the same, 0.85 is a bit old both for renpy updates and other reasons, you can still try it, our suggestion is to wait for the next version, it will have a new feature that can instantly catch up with the latest released version and you can watch past events in the Event Theater.