Does anyone know how to reset plugins (VST / DX) to factory default? The traditional reset (return to factory settings)does not do it. Is there a file where these are captured?

I've never done it, but I see two plugin_list files at the bottom of /BB/DX Settings for plugins. Perhaps back those up and delete them, and see what happens.

There are often more than two files there starting with plugin_list, but those are the correct files to delete. In my case, I have 6 of them.