I mean the one that you send PoDC updates from for your stake. I checked and it is.
I don't know for sure, this is a bit of a guess, but I guess that it is adding up all the PoDC transactions (and you receive the same amount back to the same address). So even if you only had 1 BBP in there, maybe it would get sent 100 times so an address could say received 100 BBP.