I was reviewing more of my DLC packs and comparing it to what I have on TA. Looks like the DLC for the original Ghost Recon Advanced Warfighter on the Xbox 360 is not being counted as DLC on GTN. The achievements are lumped with the rest of the game's achievements.
Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete.
Otherwise, please post a new thread in this forum instead.