I upgraded my session, but want to revert back to a previous version of Capture One.
When you upgraded the Capture One Session, we automatically create a backup copy of the previous Session version just in case you feel a need to go back to it at some point.
For instance, here we have a Capture One session created in Capture One 9.3.
Then we open the session in Capture One 11 and are presented with a message to upgrade the session database.
On Windows, you get a similar message:
NOTE: We don’t automatically upgrade your legacy images (those worked in earlier versions before Capture One 11 was released) but just the session database, so some minor differences in how the image looks may occur.
After you select Upgrade, if we browse back to the Session folder, we can see that an automated backup has been created in the Session folder of the original Capture One Pro 9 .cosessiondb file which is now named cosessiondb.backup. A completely new, Capture One Pro 11 sessiondb has been created to be used in Capture One Pro 11.
If you want to revert back to Capture One 9, close Capture One and simply delete the newly created .cosessiondb file from the session folder. Then delete the appended .backup naming on the cosessiondb.backup file.
If asked to confirm the new extension, select Use .cosessiondb on macOS or Yes on Windows.
Now, your session folder should look the same way as before an upgrade.
Now you are able to launch this Session back in Capture One 9. The session will not contain adjustments made in a newer version.