Are there more than just two ports/terminals?  If it's just a few, I would just create a new symbol cellview.  If there are a lot, then you might see if the "create cellview from cellview" command allows you to start with a netlist.

I think you have to do something with the "stop view list" -- maybe search this forum for that phrase.  There's a way to tell the netlister that it shouldn't go looking for the schematic, but instead copy in the .scs file or text view.