This is warning to all frequent flyers holding multiple OW memberships as its a lottery on where they add the miles. I do have an emerald membership on AY and a Sapphire on BA. Due to change of travel routes I decided to switch to Qatar as I got a few hundred thousand Avios there thanks to the Amex Transfer:

How on earth is this possible, can and airline just decided wherever they put the miles on and just go like "Oh, this guy is a loyal to us, lets steel him"

Qatar Refuses to add the miles, even though my Privilege club number is on the Boarding Pass and clearly I received 40% of the flights flown so it was in the system!

So this is a recent story! Booked flight on AA.com flying the following routes on AA Flight number:

I added MY QR booking by the time of booking, and also confirmed it upon check in and it was printed on Boardingpass!

Same PNR:
ARN-HEL Operated by AY (Miles received on QR)
Short transfer:
HEL-JFK Operated by AY (Miles received on AY)

Return:
LAS-DFW Operated by AA (Miles received on QR)
DFW-LHR Operated by BA (Miles received on AY)
LHR-ARN Operated by BA (Miles received on AY)

Was quite expensive tickets in Business, and I would be Gold Member at Qatar By now and got future bookings with Qatar as I was going for Platinum with them, but now I won't trust them for future EU-USA as it seems like a lottery where the flight ends up!

Any suggestions what to do? Just skip Qatar for the future and Chose other airlines to Asia that also operated EU-USA which Qatar doesn't?