Originally Posted by
gooselee
I can confirm that the automatic un-registration is definitely what happens. Primary vs. additional cardholder doesn't matter as idine sees them as two separate cards. My wife and I share cc accounts, and we both have our cards registered to our respective mileage accounts. Whose account gets the miles depends on whose card gets swiped at the restaurant.
Just so I understand, if your wife has her CSP registered with United's dining program and you're an authorized user of that card, you can register your CSP with American Airlines? Thanks!