I have an external monitor hooked up to my MBP, which I use exclusively for Parallels in full-screen mode. When I switch Spaces to another desktop, it makes my second monitor a blank desktop as well. I'd rather my external stay the same all the time, and Spaces just switch between desktops on my laptop's screen. I'm not sure I think that makes a lot of sense, but it is what it is. I wonder if this can be fixed?