While using iMovie (Catalina iMovie 10.2.5) wanting to import just ONE clip from my desktop, I now get this "Project Media" screen which I've never noticed before. All the stuff it's showing is NOT on my desktop, and is older clips/photos from previous project. I can't seem to 'disable' this screen or delete the stuff it's showing. Is there someone to get rid of this? I don't see anything in iMovie preferences. Where does the Project Media stuff reside?