Hi NightCabbage - yes that's a limitation of the current AI export, that only existing curves and edges in the model are exported.

In the future I do want to add some functions for handling what are called the "silhouette" curves as well but it will be a while before that happens.

You may want to look at getting ViaCAD for handling that part currently, check out some links in this other thread:
http://moi3d.com/forum/messages.php?webtag=MOI&msg=2789.1

- Michael