A Microsoft file hosting and synchronization service.
Thank you for the the idea, but I am sorry to report that it did not work in my case.
I did figure out how to solve this problem. I call it the Relocation Purge Method. It works like this:
• Create a new folder online (GG)
• Move the ghost items into GG
• Inside GG, create a subfolder (BB)
• Move any remaining ghost items into BB
• Hydrate GG locally
• Drag GG to Desktop (because Desktop is backed up, this moves GG within OneDrive)
• Delete GG from Desktop
• Empty the Recycle Bin
Restart OneDrive