Is there a way to recover user settings after beta updates?

I've been using the Illustrator beta version for a little while now, and it's got some cool updates, but one of the frustrations I've run into is that every single time the beta gets an update, it resets all my user settings. I know how to place presets into the Application Settings, etc., but the one that's most frustrating is workspaces. I cannot find where my custom workspaces are saved, so I can't create a quick backup. Does anyone know where to find custom workspaces in Finder so I can?