Vstsound files in wrong location

All my VSTSound files are on a dedicated partition.

However, after updating to C15, a few dozens of vstfiles ended up on the system partition:

how can I move them back to the dedicated partition?
When I click on one of these files, the message

“No action required; already registered in the Library Manager” appears.

I assume you are actually double+clicking (not single) to get the message and also when you do this they are still in the unwanted location.

Just drag the .vstsound files to where you really want them. Then double+click on any one of them which should change the registered location for anything new it finds in that location or any sub-folders.

Thank you!!