Oh, the ever-popular refrain of the -UP fares:

They are First-Class fares, with First-Class booking privileges, First-Class class of service bonuses, First-Class BA Tier Points, First-Class this, First-Class that, First-Class etc, with the sole exceptions of:

1. Economy Fare code (but not booking code)
2. No compensation for downgrade due to standby voluntarily accepted. (This includes AA)