VST Sound - Move to external HDD

I relocated my ‘C:\ProgramData\Steinberg\Content’ folder to another drive some time ago, and replaced it with a hard symbolic link.
But when I run Halion Library Manager it lists the files as duplicates in both the old and new locations. Is there anyway to correct this?
I stupidly clicked “remove duplicates” once and it deleted the lot, of course! Fortunately I had a backup…