Were the first users of the forum transferred from some other forum or messaging service? Were all the posts transferred over as well?
I don't think the users were transferred, they create new accounts here when the forum was shifted to SMF as even Satoshi and Sirus have a registation date.
Satoshi posted about transferring some posts here from the old forum in his first thread
here.
I'll repost some selected threads here and add updated answers to questions where I can
But don't think any of them were transferred here at all.