Doing same imagining as always with Engl zclonewiz, with a difference that
the problem image for cloning is made the one with 11.2.3a MU1 already
applied

This one makes each next device take over the GUID of the first registered
device

I can even unregister all & do 2 machines by hand (removing all traces,
rebooting, then registering)

No difference, a single GUID stays

A bug?

Seb