fetchem,

I'm not Richlond, but can hopefully explain what this is about:

If your AA/OW travel patterns don't allow you to use domestic upgrade credits - that is, if you fly all or predominantly international, and I believe also OW partner, commuter and other flights where you can't use them - AA will redeem credits for 2500 miles each. Since you get 4 credits per 10000 miles flown that's a 100% bonus, giving you triple miles if you already get double miles as PLT or EXP.

Reportedly, if you reach a nice agent in a good mood they'll convert even if your usual travel pattern would allow you to use them.