BFD won't read my "User Sampled Drums" folder

This a bit odd, and also rather annoying, I created a complete set of sampled drums, with velocities - some specific for certain projects - not every tune needs a hammer hitting a piece of corrugated steel, or the sound of an SR16 Snare, Tom or Kick, but when you reload a project you do want them to be included.
Oddly to test this wasn’t a simple folder problem I recreated a single snare drum - and now 2024-09-08T23:00:00Z it’s part of the user sampled library - whilst every thing else is not !! - simply why aren’t the other self created user samples being read, yet this new one - created today is ?