How to Remove Old Expression Maps

Is there a config file somewhere in Windows where I can manually remove factory and custom expression maps from my expression maps list?

Most of my custom expression maps have the delete icon grayed out. Is this because I imported them from a previous project rather than having created them in my current project?

At this point I have about a hundred expression maps in my list, and many of them are old expression maps that I don’t want to use anymore, including most of the factory expression maps. It’d be really nice to trim down my list, and I don’t know why I can’t delete my custom expression maps.

I found that I could delete imported libraries from this folder and get them removed from the list: C:\Users\[Username]\AppData\Roaming\Steinberg\Dorico 5\DefaultLibraryAdditions

I’m using Dorico 5. I’m guessing the correct folder will match whatever current version your using.