[Wolfgang]

Autosave is NOT called during view update!

Have you add some stuff to the view update events?

Do you now how to trace? then trace view update and autosave, and watch the console (resp. scroll back). Proof that it's called instead of assuming so.

Do you use graphical update for your views? Which view profile is chosen (automatically) when you create a new view of your big model? Are you doing multiple view updates? - Which Modeling version is in use?