How did it happen that the first HAB in your game had event 179090 and not get the cores on Styria with 179002 which would be the normal way? Was Styria already gone before HAB 1 could inherit them and get the cores with 179002?
It chose action B....................maybe action B should be removed as it does not make sense in avoiding historical cores
HAB annexed PRM early, then HAB got the event in question, then BOH annexed HAB