Hi Paolo, can you please post the .3dm model file so I can test it over here?

It looks like you should have matching vertices along those edges - note that you can have matching vertices even if the UV grids do not perfectly match. There will be n-gons created there that have matching points for each different surface along the common edge.

Possibly the n-gon output is confusing you there - you may want to switch the Output: option to Output:Triangles to more easily see where all the vertices are connected to one another. Also here is a previous discussion with some illustrations that may help: http://moi3d.com/forum/index.php?webtag=MOI&msg=1536.30


It is likely that your problem in Silo there is that Silo doesn't like the n-gons in that particular area, if you switch to Output: Quads & Triangles when exporting from MoI, that may solve the problem there.

Similarly I don't think that 3D Coat likes to have n-gon polygons, I would also recommend using Output: Quads & Triangles for export to 3D Coat and in addition to that it would work better for displacement type actions if you were to dice up your polygons into more evenly sized smaller pieces by using the "Divide larger than" option when exporting from MoI. Here are some examples:
http://moi3d.com/forum/index.php?webtag=MOI&msg=1549.4
http://moi3d.com/forum/index.php?webtag=MOI&msg=804.26


But if you can please post your .3dm file it would help me to test and verify.

- Michael