[Samba] issue on upgrade samba 3 to samba 4

[Zhia Chandra]

hii all

i think i have finished trial to upgrade my samba 3 pdc server base on
clearos 5.2 into new samba 4.1.1 in new machine and different network

but then i realized when i check my user with samba-tool, i cant find any
of my samba 3 user account, all i find is

[root at pdcs4 ~]# samba-tool user list
Administrator
dns-pdc
krbtgt
Guest

has anyone got same problem with me ?
how to overcome it ..

thx :)

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Thx & Warm regards
Zhia Chandra