[Samba] Classic Upgrade changes domain SID

[Peter Koch]

Dear samba experts,

I did a classic upgrade from a Samba 3.6.14 samba NT4 DC to a
Samba 4.18.2 AD-DC. It does not work and I just want to make sure
that I have the correct understanding of our domain SID.

On our old Samba server  net getdomainsid  shows:
SID for local machine SERV00 is: S-1-5-21-1415314133-2460755331-2761616138
SID for domain NAV is: S-1-5-21-1415314133-2460755331-2761616138

But Classic Upgrade script says:
.....
Unable to determine the DomainSID, can not enforce uniqueness
constraint on local domainSIDs
.....
INFO 2023-08-27 10:50:08,940 pid:8522
/usr/samba/lib64/python3.9/site-packages/samba/provision/__init__.py
#496: DOMAIN SID:
S-1-5-352321536-3589954388-2200284306-183212708
.....

And  net getdomainsid  on the neu AD-DC shows:
SID for domain NAV is: S-1-5-352321536-3589954388-2200284306-183212708

Isn't the whole idea of the classic upgrade to migrate a NT4-DC into an AD-DC
WITHOUT changing the domain SID?

If the classic upgrade cannot determine the DomainSID, what might be the reason?

Peter

Peter