Hi L_AN, thanks for those steps on triangulating within C4D without losing normals!

Of course, if it is possible to do that with a few manual steps like that, it seems like it should also be possible for the Maxwell plug-in to do the equivalent thing so that you would not have to worry about this issue at all.

I would recommend contacting Maxwell support and asking them to improve their plugin to remove this problem where their plugin ignores the normal tag on all but triangulated geometry. If they need triangles, there should be some method in C4D that will allow them access to C4D's triangulation which includes the normals. That's what C4D's own built-in renderer does.

Including the normals is a very important thing for any rendering program, so they should never be ignored like that.

- Michael