...
If you use Favorites or other local tags, and would like to keep them after database is cleared, you need to back them up. Export all the tags you would like to preserve using Local Tags Export and Import. You will need to import them back after database is cleared.
...
This will make sure you will be able to run Deskzilla with the old workspace if anything goes wrong. See How to Backup Your Workspace.
Procedure
To clear Deskzilla local database:
...