As far as I know, there isn't currently a way to back up your settings. If you have admin access, you can see the "logs" that tell you when, who, and what was changed, but I don't think it has all the details of the settings before and after.
On this forum there is an ideas section. You can check if this has already been posted by someone else, if it has add a like or comment. If it hasn't been, then post it! I think it would be a great feature to have.
Adobe Analytics Ideas - Adobe Experience League Community