I will greatly appreciate the history voting api calls that you can provide me with... where you saw they were not!
Just take a look at the links I included.
Your wording indicated they were voting with BM as proxy before but now they are not.
The blockchain though says they were never proxied to BM/angel etc. There is no record at all in them even setting a vote. It's just going to the default nobody.
I know the name... but I never assumed they all vote with BM as proxy.
Unless there is something I missed in reviewing their accounts that someone else can show me, I think you might have misread or not looked closely enough at their transactions.