I know there has to be a routine even though it's not been mentioned on this Support Forum, because the forum at
http://www.onlinekosten.de (in German) used to be UBB but they switched to WWWThreads because of the server load, it's a pretty busy forum. I know they switched in a matter of hours, with all users and posts converted.
[]/w3timages/icons/wink.gif[/] It's a miracle []/w3timages/icons/wink.gif[/] - since they did it, there has to be a routine! How else could they have converted thousands of users and tens of thousands of posts?