Originally Posted by
trekwars2000
It is all a UA ticket booked in Y (I presume M is economy) upgraded with SWUs. I can only upgrade the UA legs with SWUs so the LH feeder flights are in Economy.
Within one PNR, the highest luggage allowance reached on any leg is applicable for all legs. Since you're flying C back and forth across the pond, your baggage allowance will be 3 bags at 32kg (70lbs) each on all your flights that are on this PNR.