#3
I believe we are talking about the same thing in different terminology. I currently have a CAD dwg that has been saved in page units and am trying to geo-reference the dwg in arcinfo, the problem is that arcinfo does not recognize the page units or paper units so I want to save the dwg in geo-graphic units. To my understanding is possible.

#4
You can do this with the WBLOCK command. This will write the paperspace entities to modelpace (in a new file).
After running WBLOCK type OOPS to restore entities.