I have recently noticed a discrepancy between the gcmap.com distance and what AA posts to my account for EQM.

SAL-MIA credited 12 short
FCO-LHR credited 1 short
DFW-HKG credited 12 short
HKG-SFO credited 13 short
MIA-LGA credited 1 short
JFK-MIA credited 1 short
SYD-DFW credited 9 short

On the plus side a few credit higher than the gcmap distance:
LHR-JFK credited 1 extra
DFW-EWR credited 4 extra
EWR-MIA credited 11 extra
VCE-PHL credited 1 extra

As you can see obviously more flights credit less than credit more miles. At the end of the year I will be out about 100EQM and maybe 300RDM, sure it is small numbers but it is really annoying!

Anyone know how they work their mileage out? Wonder if I should photograph the "distance to destination" part of the interactive map and fight for those miles to be honoured.