Importing Users

I'm going to try to create a "load_users.sql" file in an attempt to populate my production Wikidot server with an initial set of users. In looking through the "dump.sql" file in the Wikidot 1 distribution, it looks like all I need to replicate is the copy commands for the ozone_user and profile tables.
Are there any other tables that need records added or updated?
On a related note (for purely selfish reasons!), are there any plans in the works to allow wikidot.com users to create an export of their wiki sites that could be imported into an open source install? I realize that extra steps would be involved with file attachments, etc., but it would be a nice feature to make a full backup/restore of a site easier.
-Ed