Can I Use American Systemwide Upgrades On Awards Travel?

Can I Use American Systemwide Upgrades On Awards Travel? Upgrades are only valid on individual published-fare tickets. Upgrades are not applicable to AAdvantage® travel awards; any free ticket; military or other government fares; opaque fares; infant tickets (including INF50 fares) or purchased extra seats. Can you use AA systemwide upgrades on British Airways? You may