Currently I'm using VestaCP, in this panel you can backup your entire users. This contains the entire config of the panel (like which domains are added with the specific configuration of these domains, mail settings etc.)
Also I can download a backup file straight from the panel.
I've been looking in aaPanel for this functionality but I can't find it anywhere?
Does it even exist?
This is important when you ever need to move to another server. You don't want to reconfigure everything.