OP: For future reference, information about upgrades in general and award upgrades can be found:
- In the wiki:
http://www.flyerguide.com/wiki/index...leage_Upgrades
- On AA.com:
http://www.aa.com/aa/pubcontent/en_U...anAirlines.jsp
# Upgrade awards are only valid on individual published-fare tickets and are subject to capacity controls.
# The following fares are not upgradeable:
* Fares booked in I or O
* Fares booked in Q between North America and Asia, Europe, India or South America.
(emphasis is mine)