Could you recreate the URL structure to the new XF? I am worried all old URLs will be broken if I switch to XF from vB4/vBSeo. Happened to me once when I messed up and took some time to recover.
I am a site owner since 99 and vB since 2002. I do php/mysql wheen needed. Used to do assembler programming on c64 and Amiga, lol. (My first BBS was on an Amiga btw)