by Support@MixVibes on 10 Aug 2012, 17:16
Yes, not a problem.
Beware of getting back and forth between both version.
Using mapping, collection, settings from 1.7 into 2.0.1 is ok but not in reverse. Backup all your sensible files before !
In a perfect world, user should only go to the next version, not rolling back. This is not a case handled by the software, you've been warned.