Proxy Objects

I have several older Architectural Desktop drawings I need to open and I can't seem to get the ADT proxy objects such as walls, windows, doors, plumbing and furniture blocks to show up in BricsCad (Mac), other than a rectangle representing the outer boundary of each entity.  I didn't expect to be able to manipulate the ADT walls, doors and windows but was hoping the plumbing and furniture blocks would show up.  I read a post on the BricsCad Windows forum regarding this and I believe I have set everything to the recommended settings (Demandload = 3, ProxyShow = 1 or 2 (same results either way), Proxygraphics = ON).  Has anyone else figured out the proper settings for this on BricsCad for Mac to be able to see ADT proxy objects?  Thanks!