*** Edited by me, please feel free to remove this topic entirely *** I see the explanation here: https://www.paypal.com/st/smarthelp/article/why-was-my-credit-card-number-or-expiry-date-updated-automatically-faq4162 I was totally unaware of this, and it didn't appear on PayPal Help Search - I found it just now using Google. Please feel free to delete this topic, and sorry for raising a false issue!
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