V2 beta Oct-19-2009 available now

 From:  OSTexo
3000.36 
Hello,

After trying this a few times I haven't seen duplicate edges that are silhouettes. The Export command exports all curves and edges in the model as curves in the AI file for me. Perhaps it is because I have the model selected that I am exporting to AI after running the Silhouette command.

I try to think of it as the model being made of glass, even if I select a Top view I will still see the edges both at the top of the cube as well as the bottom of the cube in your example. That agrees with the results I am getting currently. I am assuming when MoI has hidden line removal what you are suggesting will be the case. Even with the Silhouette command you have to do some cleanup, but for me it is a giant leap forward for illustration purposes.