^ My suspicion proved to be correct and I did earn 350 miles + 5 XP on my N class TLL to ARN ticket, despite FB website not listing it as eligible (are they ever gonna update it?). Not only does it earn miles but it earns more than I expected.

It's not necessarily a great news for me this time since I need to find another flight to not credit to FB now (otherwise I'd end up with too many XP for my qualification strategy) and that other flight could've earned me more miles.