In a build I've been editing, I've stupidly allowed the root prim to become completely enclosed inside other prims in the object. Now I need to move the root prim, but I can't click on it to select it. The work is fairly complex, so i don't want to undo the rest of what I've done. Is there any way to select an inaccessible root prim, or any other linked prim that can't be directly clicked on, without disturbing intervening prims? Thank you for your help.