On a recent trip to Brussels we purchased the upgrades to fly from TUS via ORD (overnighting) them ORD to BRU. We were waitlisted for the flights but were not cleared until we got to ORD. This meant we did not get upgraded from TUS via DFW to ORD. The seats were available from TUS-DFW-ORD to BRU but the waitlist did not get cleared. Inasmuch as we paid for the upgrade of the entire outbound trip we watched in amazement as the upgrades from TUS to DFW to ORD were given out to people who used upgrade points versus paying the fee and 25k miles. It does not seem to be a fair practice to permanent Gold members to be treated this way. Your AAdvantage desk Cus Svc did nothing to adequately explain this procedure.