Cannot Upgrade from Core 2023.12.0 or OS 11.2

I successfully updated to Core 2024.1.2 after a fresh reboot of the entire system. I then updated the OS to 11.4 and it rebooted, but it appears it is restoring a backup because the Core reverts to 2023.12.0 and any changes or add-ons I had added were gone. I do not see anything relevant in the logs. Any help is appreciated.