Tricky question that I am hoping someone can answer. How often does AA "sweep" for processing 500 mile upgrades?

While within my 72 hour upgrade window as a Platinum Pro, I saw there were 17 available J seats DFW-MIA on July 5th. I had used a BXP1 on this flight, which didn't seem necessary. Expertflyer is still showing C7 on the flight, and the seat map is virtually empty. I called Meeting Services to have them unapply the BXP1, as I figure I should clear easily and can save it for another time. It has been over 12 hours since they processed me back into Economy, but I haven't cleared yet. I am showing as upgrade requested, but I would have figured that I would have cleared within an hour or so. I asked if my ticket needed to be re-issued, but 2 different agents said no. I feat that the way the ticket was downgraded that the system may skip over me for the upgrade.

Any idea on how I can ensure this isn't the case and the upgrade processes? There is no reason that I can see that would prevent me from getting the upgrade prior to the airport list except for the fact that I was upgraded using a BXP1 and then asked for it to be unapplied.

Thanks for your insight!