A subtle change was made to our printing process (Revit 2012) when we print from views that have Temporary Hide/Isolate changes. This dialog is presented to us:
The first option ignores the things we've hidden or isolated and prints the view as if we didn't change anything. This is how printing such views behaved in the past. The second option gives us the chance to respect the fact that we've changed what we can see in the view so we CAN print a view that's been altered. Erik Blackburn with NBBJ pointed this out to me as a candidate for a post and I think it belongs in the Department of Subtle. Thanks Erik!