Today, we announce the availability of a new archive CDN dedicated to the long-term archival of our old and End-of-Life (EOL) releases.
Effective immediately, this archive hosts all repositories for releases based on Debian 10 (Buster) and older...
If possible (e.g. enough storage available) you should always restore to a new VMID, or create a backup of the broken system before overwriting it.
You can never be sure that a backup is valid and restorable until you have sucessfully restored...