I’ve tried also the old versions and there are the result:
urbackup_restore-2.0.3-2-amd64 works (balena etcher + new partition on the free space)
urbackup_restore-2.1.1 works (balena etcher + new partition on the free space)
urbackup_restore_2.2.0 doesn’t work
urbackup_restore_2.2.2 doesn’t work
urbackup_restore_2.3.1 doesn’t work
So i guess the issue starts with the 2.2 restore cd. Now i will try to check the mods between the 2.2 and the 2.1.1 and i will let you know.