OK,
#1 No HA on any of my cams
#2 No
#3 Yes on all my cams
#4 No, affects all my cams
#5 No, multi groups and all cameras index works fine. ( update: it does give error on the all cam index view as well)
#6 Yes, I went back to 6.0.4.2 and still had issue. But I did have an EDGE update...