I am inserting a view of an assembly in to a new .idw and when I try to show the BOM and select the view it only allows me to have my BOM shown in "parts only" mode the area is grey were you would normally choose "structured or parts only. When I am in the .iam I have enabled and disabled both types of BOM and it has changed nothing on my drawing. I have tried opening and closing inserting different .iam's and I am never presented with the option to show a "Structured" BOM view. Why can I not select Structured?