Hi ed, - if you want to get the hidden line curves back into MoI you can just open or import the PDF, AI, or DXF file that was just written...

What is it that you would be trying to do by generating the hidden line curves only inside of MoI instead of as an export?

I guess it could be possible to add in a "Make2D" like command for generating hidden lines but it would help if I knew why you wanted to do that.

In Rhino you have to do it because there isn't any way to otherwise make a hidden line view for exporting, unless things have changed a lot. It's a pretty clumsy workflow though, you do Make2D and now you have a bunch of curves sitting inside the same model as your original objects, then if you want to do something with them you have to try to hide the original objects and keep the 2D objects separate from them somehow.

- Michael