ADMT TcpipClientSupport registry key for SID migration

Archived from groups: microsoft.public.win2000.setup_upgrade (More info?)

Hello,

I am having a problem with ADMT to migration the SID
history of my users to my newly created Windows 2003
active directory. I have followed Microsoft Knowledge
Base Article # 325851.

but I keep getting this error message "Either the source
domain's primary domain controller (PDC) has not been re-
started after setting the tcpipClientSupport registry key
to 1 or the PDC could not be contacted."

I have discarded the communication problem between the NT
4.0 server and the Windows 2003 server because when I do
not select "Migrate user SIDs to target domain" the
migration is successful.

to be sure I have added this key to my NT 4.0 PDC and BDC
and rebooted twice both servers:

REGEDIT4

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]
"TcpipClientSupport"=dword:00000001

What am I doing wrong? is there a more detailed
troubleshooting procedure somewhere out there?