GEOPAK Corridor Modeler - Plan View Graphics

I am trying to use GEOPAK Corridor Modeler.  I have set it up to import plan view graphics for several features.  One of these is for Edge of Pavement.  I then set up Point Controls to look for this EOP so that my pavement is modeled wider at intersections to follow the tapers and radii.  I noticed that Corridor Modeler will not recongize anything but lines for Plan View Graphics.  It is not seeing the MicroStation Arc elements that define my curb returns.  Is this correct?  Is there a way to trick it into recongnizing the curb returns?

 Josh Mauritz

MS v08.11.05.17

GPK v08.11.05.39