RIX
I was on the RIX to ABZ last Wednesday. Economy was full or very close to it. However all 16 seats in business class cabin were empty. I guess that's where the issue lies in terms of the possibly uncertain future of the route.
Similar story on the ABZ to RIX two weeks earlier - economy approx 80% full, but again not a single passenger in business.
Will be a shame if it doesn't return next year.