MediaBay Attributes Problem

I checked into this on my PC, and discovered that a file named Defaults.xml in C:\Users\Michael Trigoboff\AppData\Roaming\Steinberg\Cubase_9 (I’m not at the machine that has Cubase right now, so this path may not be correct in every single detail) contains the entries in the drop-down menu. I edited that file and got rid of some of the bogus entries. The top part of the menu is now what I want. The lower part of the menu still contains bogus entries, and I have no idea where they came from. I’ve attached an image of how it works now that I did the editing.

The mystery is, what’s the point of these menus if they don’t reflect what you’ve actually done with Cubase?

I’m currently discussing this with Steinberg tech support. I’ll report back if I find out anything useful.