Found an article on using "zypper migration" (an add-on plugin, installed by default).
Anyways it seem to try and connect to SCC by default, but we use SUMA 3, so the system is not directly registered with SCC. This causes "zypper migration" to fail.

Is there a way to get "zypper migration" to connect to SUMA 3 instead of SCC ?

Looking for more detailed information on a SP migration of a system. SUMA 3 does't provide enough detail on packages being upgraded, installed or removed.