Originally Posted by
WineCountryUA
PNR and BP information content are an industry-wide standard form (although there are some free field areas), so would not expect any change in these for this corner case situation. If UA decided to go cardless, the virtual card or reporting via *A system based on your MP account would be more likely approaches.
After over a decade on FlyerTalk I still keep on learning new things about how things work. Thanks so much for your wisdom!