how can i fix my database?

[kamran_dotnet]

hi friends
i just import users to new forum without using impex,
just by using PHPmyadmin and copy user table to new database
i just copy from id number "2"
but now none of users can be search with vbulletin
only user 1 (administrator) that created with vbulletin installation can be found by search
there is no other problem in forum.all users can register and work with forum but other imported users cant search
so some plugins hacks wont work in my forum.
like GxboxLive
its only find user id "1"
whats should i do?
how can i fix my database?

its already late for fresh install.my forum running long time ago and i cant loos my data