Bruce,
To answer your first question: There isn't a built-in method of backing up your settings. And I'm sorry you lost those, that of course should never happen. You can manually backup this data by copying the \User folder on your SD card to another location. But as you said, this doesn't help when you are sitting in the cockpit.
To your second question: Yes, the 740 will cloud backup. You just need to login similar to how it works in the app - touch Menu -> About -> My Account
Thanks!
Walter