Blizzard support has a new feature; you can do an online chat instead of the phone call.

The phone support said their queue was entirely full and to try back later.
So I tried the chat thing.

It took about 3 minutes to connect.
There was a bug, where I could not scroll all the way to the bottom of the chat window, so the most recent thing typed by either myself of the representative would not display.
After figuring that out, a series of *bump* comments got the most recent message into the viewable area.
Aside from that, great feature.

An online chat GM can move accounts from on B.Net address to another.
I had previously had five B.Net emails, each with their own account.
Towards the end of the summer, I merged them all (via the phone tech support) into the one B.Net.
But going for ten boxing, and having a limit of eight accounts on one B.Net means at a minimum I'll need two B.Net accounts.

The representative needed my security question, and the address & phone numbers on the account.
The entire process took less than five minutes.

I've got original accounts, on both of the B.Nets now, so in theory I'll have B.Net wide mounts and achieves on all ten accounts.
Will update later, to see if that is actually the case.