Fortunately / Unfortunately, we only add a few devices to a drawing, such as Card Access locations to the building's floorplan. The way we typically do it is to take their floorplan, paste it into our titleblock, thus creating new drawing(s) specifically for security devices locations. I then take the new drawing, get rid of the 'garbage' such as grid lines, ductwork, electrical, plumbing runs, etc... All I really care about are walls, windows, doors, furniture, type things.
In this case, we put our devices on THEIR drawings, on their title block. They want us to put our devices on the entire campus and send it back to them. In cases such as this, we typically have their drawing for a few hours then send it back to them.
This happens so seldom, that I have to 're-learn' XRefs.
I appreciate the help folks.
craigr