Product Family: Act!
Product: Act! Pro, Act! Premium
Version: 2005 and later
It is not possible to downgrade an Act! database from a newer version of Act! to an older version of Act!. If you created a backup of your database before you upgraded to a new version of Act!, you can uninstall the newer version of Act!, then reinstall the older version and restore the backup that was created before you upgraded. It is important to note that since the backup contains only the data that existed prior to upgrading, that any data entered into the database after updating will be permanently lost.