It looks like in sailwave that if you have the series tie resolution for RRS A8.2 ticked it seems to take precedence over the RRS A8.1, not sure why as this is the second level of decision.
If A8.1 is applied (and I may have this wrong so please feel free to fling dirt at me) then if there is a tie for the series then the results are written down in order and at the first place where there is a difference then the helm with the lower score at that point takes the win.
What is does not say though is whether the series tie is applicable to the whole of the results over the series or just the counting (i.e. non discard scores) ones. I have always presumed that the tie happened with the minimum number of counting races and then you applied A8.1, whereas is the option for A8.2 is ticked in sailwave it would imply that in fact what you do is to see if there is a tie with the counting races, then you score all races and only then if a tie remains do you apply A8.1. Have I got this right or wrong?