Does the US LT counter only include BIS miles or does it include all miles (status bonus miles, credit card spend miles, etc)? AA moved from the latter to the former a couple of years ago, making it harder to gain LT or advance LT status.
If US is able to distinguish between BIS miles (and not BIS miles) accumulated since the time that AA made this change, the combination (or presumed combination) for that period may only include BIS miles. If they can't distinguish, well.....then it's time to earn some US miles quickly
