Import only deletes from your database. On folders, playlists and history it skips Delete rows and tells you how many. Your playlists and folders are yours to curate in VirtualDJ, and history is the record of what you played, so VDJTools doesn’t delete from them.
What to do #
To drop a track from a playlist or folder, remove it in VirtualDJ. On those worksheets, set rows you want to leave alone to Keep.