Hi Mark. Thank you so much for sharing this. I work recently on a big project with many groups and excluded elements are a nightmare. I wish there was a way to block people from accidentally excluding elements. I found your script very useful to in checking which groups have excluded elements although I made some changes because it wasn’t working correctly for me. For some reason, in our project there are Sketches and SketchPlanesin the groups. Probably they are created when faces are split. Also, your script was very slow because you repeated a process of placing a new instance of a group type for each instance of this group what can be done just once. I’m also combining data differently.