This transaction description was first reported in 2020.
Yeah, so I guess it took Amex about 6 years before it finally coded up a way to detect this? My January transactions of 2026 and 2025 both say "TRAVEL BANK CA" in the Passenger section. If that's how they're detecting it, then all UA has to do is remove the words "TRAVEL BANK CA" from this section and these transactions might start getting auto reimbursed again.
Of course, the challenge here is that even if you are United's IT department, you probably do not have direct access to Amex accounts, and you certainly do not have visibility into transactions other than those initiated by your customers through your own systems (things such as reimbursements on the Amex side that are separate from the TB purchases themselves would be just as off-limits and private to the individual cardholder as non-UA transactions). But I'm guessing that UA probably *does* have enough employees with Amex Platinum cards that have not used their annual $200 airline credit yet that they could use as test accounts to figure out what's being reimbursed and what's not. Or they could just make a change and just monitor this thread here on FT

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