Hi,
My pleasure.

Happy Monkeying!

Excellent, thank you so much for your prompt reply and solution
Great job.

Hi,
Note that all tracks are in Accessible tracks Auto playlist so your proposal of IF would fail all the time.
You can easily check what playlists tracks reside by using Right click -> Find more from Same -> Playlists.

Could someone please consider writing a script to prompt you to "reconsider", when deleting a track if the track is included in a playlist.
Cant be all that difficult when you know what you are doing, (sorry I don't) after all the information is already written into the track properties "classification" section, the information is there already, so a simple "If" check would save errors if you are deleting duplicates, one of which may be on a playlist one may not.
If I knew how to do it, I would have a go myself.
Thanks for reading
Best wishes