Originally Posted by
TransitJohn
Hi! My only rule of thumb, and it's an important one, is to always, ALWAYS, keep your boarding pass(es) until you see your miles post to your account! Have fun, and keep on flying!
That is my number 2 rule. My number one rule is, don't accept any boarding pass that doesn't show your correct FF number. Just smile and say, "I am in no hurry. I'm happy to stand here until you can produce a BP that sjhows my ????? number". In other words, if you are posting Star Alliance flights to UA, make sure the US or LH bp shows your MP number - and not your US DM number. Once miles post to the "wrong" account, no getting them back.