Remathilis
Legend
So apparently, resistance to non-magical weapons was overvalued in 2014 as being a multiplier on HP. Thing is, it's pretty rare to fight creatures and not have a magic way to damage them, which made them far weaker than their CR indicated. So when they removed it, they replaced it with more hd/HP. It means creatures who were resistant to magic got tougher if you have a magic weapon.Non-magic BPS resistance was not replaced with blanket BPS resistance, or any resistance at all, it was just removed entirely.
Granted, it's a lot less flavorful, but it does make the fights more impactful.