You’re not the only one to have this problem. There is some fabled .dll in inventor 7 to convert to .max according to Phil (from the infamous duo Ted and Phil), butwe could never find it. As far as missing verticies in .iges, .iges is like that; it just plain sucks. Unfortunantly, it’s really the only way to go from inverntor to max that I know of, so good luck fixing it. What I’ve been doing with our bot is putting it in iges and fixing it in max.