It's been a while so I can't answer that one off hand looking at the forum design document activity will be used in the new forum and back checking through the thread see one named moving over but no wangbus post was in it on that part in particular, his response was to API's.
https://bitcointalk.org/index.php?topic=892653.0

Whether this implies that all users start on a new slate or not is not specified or how account transfer works someone else with more info knows the answer for sure as I don't recall slickage wangbus or the others mentioning any particulars myself.
(Or maybe we haven't even had a transfer discussion and how it will be carried out although that would be strange -- still drawing a blank though)
https://docs.google.com/document/d/1bHlm4NQkSzaBTT5tLIqQBmV92wSsbdOX5r-dRR9Dgg0/edit