Version 6 can't handle complex geometry in Up-To tool. It creates graphics errors in advanced rendering. AGAIN features are removed, not added. We can't do the stuff the way we used to. It refuses to do stuff once a while, especially adding chamfers and handle complex radiuses. Even if there is the same object already created that way. Which is remarkable. So old problems not fixed.
**Last paragraph removed by moderator due to violation of community guidelines**