heyho,
e.g. --udim 1031 bakes the corresponding patch.
Is there any way to specify udim ranges?
Anyway there is a difference baking the mesh in UV 0 (default) or in --udim 1069
Default:

UDIM:

The AO looks fine.
Any help would be nice.
P.S.: It is great that the baking still works if the mesh streches over several UV patches/UDIMs !!!
Cheers
Rico