The upgrade from Bullseye to Bookworm is turning out to be a MUCH larger upgrade than was the upgrade from Buster to Bulleye, more than 8200 packages are being updated so it is taking much longer than expected.
Then, when it is finished, I am going to try to move this virtual domain off the existing server to the newly built server because this is one of the hosts I build kernels on owing to the necessity of them being signed for Debian and the new machine builds a kernel package almost twice as fast as the one it’s presently on. So when it gets done there is going to be some downtime while I copy the virtual machine between machines.