Yeah, you can delete Saved whenever. It’s where logs, performance captures, etc… are saved, but also where save games are saved by default for unpackaged games IIRC (packaged ones save them to the user documents dir or something like that, so they’ll work on UAC machines).
I’m not 100% sure about those order files in Build. I think they’re put there so you can force a specific packaging order if you’re optimizing for slow media like an optical disk, but I’m not 100% sure. In any event you can certainly delete them.
Cheers,
Michael Noland