restore of boot disk worked flawlessly and yes backup and disaster recovery is one of things I love in Linux world
I found this thread having a similar issue on 23.0.2 upgrade but I will keep the old Raspi running and change my strategy
I prefer to setup a new instance on the new server and migrate users and data
for everyone’s reference the command to restore is
sudo dd if=/media/myBackupDrive/raspimage/BextCloudPi1.49.image of=/dev/sdb
and to make sure you find the right disk and partition, use lsblk command