[Samba] About idmap uid/gid

[PITFALL]

Hi! All:

I have a problem with uid management after (re)join domain.
When I first time join domain, domain users will be assigned uid according to
the range of idmap uid. If somehow I rejoin domain again, but unfortunately 
some users are deleted from the domain controller, the uid will be 
rearranged and different from previous assigned. The same domain user will 
have different uids! How can I deal with the problem? 
Any reply will be appreciated!

Thanks,
Latrell.