Hi Bard,

> Why MoI cannot import all the formats that it exports very well

MoI is set up to work with NURBS data at modeling time. Polygon mesh data is a different type of data than NURBS data - MoI can export to various polygon mesh formats by taking it's broad smooth NURBS surfaces and dicing them up into little polygon facets but it is not easy to go the reverse direction and take already diced up facets and recombine them into large smooth spline patches.

So that's the reason why MoI can export to more kinds of formats than it can import.

See this previous thread for some more explanation:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3880.2

- Michael