Music Menu - Recent albums

I am new to osmc and kodi and any help getting thru the learning curve is appreciated. I am experimenting adding and deleting music using a thumb drive and a few albums before doing the setup on a usb hdd with many gb of music.

On the Music Menu, Recent albums are displayed that I deleted some time ago. I have gone to settings-music-advanced-library and clicked Clean library but no joy. Am I doing something wrong or is this a bug? If this is a bug or “feature”, can anyone point me to a file I can edit to remove the entries in error?