I'll wait for Winterbay to elaborate but I am not seeing a BBCA problem here. "You have selected to do casual runs like hardcore (using your CCS)." says to me that the user has accepted responsibility for the CCS and your experience shows that when you realized that and changed your CCS the problem went away. If I tell BCCA I will use my own CCS then I don't want it overriding my selection.
But maybe I'm confused since I just make BCCA use WHAM
But maybe I'm confused since I just make BCCA use WHAM