I’ve just solved my smoothgroups problem when it comes to using Silo exports in Max. Before it wouldn’t let me edit the normals even with modifiers without extracting each object by element from within itself. (basically taking the whole object out and leaving the name) It is really simple – the obj importer has a ‘faceted’ option, which completely ignores the normals exported by Silo, which is fine since Silo can’t edit vertex normals or smoothgroups anyway.
While I thought i was giving up the software for good (lack of updates + this problem), a new project makes me want to use it again. Max’s tools are fine but tedious, and I don’t have enough money for Modo. So long as it works I guess I’ll be using it.