Making regular backups should be a matter of course - even if it seems annoying. A separate reference to a backup should therefore not even be necessary. If you don’t make a backup of your most important data before an update or upgrade, you don’t have to worry about data loss if something goes wrong, because something unforeseen can always happen - even with an /e/OS OTA update!
My last successful manual upgrade from /e/OS Q (Quince Tart) to T ( Tiramisu):