Hi, I'm currently working on a model created by someone who has recently left my office. My problem is that when I select a group to edit, all the other exterior entities disappear. It's a major issue when I'm trying to stretch a wall to match an ajacent one in another group or move a column to match an imported autocad elevation in another group.

Usually, the way I've experienced working with groups before, the other outside entities just become grey, but are still visible. I'm assuming that this must be some sort of drawing preference, but I can't seem to locate it. I'm using Sketchup 6. Does anyone know how I can turn off this setting?