Hey @DJColdfield This is expected behaviour. It’s noted in the user manual page 20 in Adding & Removing Tracks.
When viewing playlists from left pane in Engine DJ this shows the sum of all the playlists and tracks from all connected drives. When using this view this allows the user to remove a track only from a playlist or remove a track from the collection.
The option to remove a track from a drive is only presented when the user is viewing playlists on an external drive via the Drives pane.
This option is only presented when viewing the collection on an external drive so the user cannot remove the same track from multiple connected drives if they were viewing the whole collection via the left pane.