Originally Posted by
gnomey
...canceling an Amex MR card doesnt lead to MR points forfeiture, as long as you pay the balance
This is incomplete information. You must have another card linked to the same Membership Rewards account or the points will void in 30 days. All documented here:
https://rewards.americanexpress.com/...=footer-tandc#
If you voluntarily cancel your enrollment in the program but keep at least one American Express® Card open and in good standing, you'll have up to 30 days from the date of cancellation to use any points in your program account. If you cancel your enrollment in the program and don't keep open any American Express Cards, all points in your program account will be immediately forfeited.