I have a question on Business Extra Upgrades for International Business Class. I am booked DFW-MIA-SCL and SCL-MIA-DFW. The DFW-MIA and MIA-DFW is booked in M, the MIA-SCL and SCL-MIA is booked in W.

I had my assistant cash in two BXP3 awards and call American to apply them to my reservation. A few questions - how do I tell they've been applied and I am waitlisted for Business?
Should I call AA directly to see if they are applied correctly?
What priority do I have for the upgrade, and on the domestic portion will my Plat Pro status be ahead of BXP3?
Anyone have experience for upgrade inventory on these flights recently?

There are 8 seats still open on my outbound and 12 seats open on the return, about three weeks out. This is on the small cabin 787-8 with only 20 seats I think.