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

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

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

No difference, a single GUID stays

A bug?