Originally Posted by
notquiteaff
Would reporting the card lost trigger the issuing of a new card with a different number? Or does Amex keep the last four digits the same?
Reporting it lost changes one of the digits. It's the easiest way to force different last 4 digits on an Amex. With an -Xxxx the fourth to last digit is basically a replacement count, it always is a 1 in my experience on the initial card after approval, and will tick up if you "lose" a card.