I am not positive because the new interface still has me a little disoriented, but I think the SendTo 3DS Max Design function has been removed.
Does anyone know for sure if this is the case? I was hoping they would add to this functionality by including a SendTo Civil 3D tool (and one in Civil 3D to SendTo InfraWorks,) but it appears they have killed my dreams. Boo hoo.
so how do you go about this, fbx?