In order to avoid not having to show a linked CAD file for owner-supplied equipment, I tried just drawing some simple boxes with detail lines, and then grouping those together for different pieces of equipment. Then I grouped those groups together to make the entire owner equipment layout.
I copy/paste aligned this overall group to another floor plan with no problems.
Now I'm trying to copy/paste it to a 3rd version of the floor plan, but it will not paste at all. In fact, in this particular floor plan, I can't even place a detail group at all. When I click the Detail Group button, nothing happens. I can drag/drop an equipment detail group from the project browser into the floor plan, but I cannot drag the overall layout group (with the nested groups) into the floor plan.
What is going on here?