If you elected to have your AP date extended instead of getting the partial refund for the closure period, then your new expiration date is the end date for the full refund. If you chose the full refund instead of the additional 30 day extension, the amount should be based on the number of days from 7/11/2020 -> your extended date based on closure period (original expiration date + 117 days)
However...
We had APs that were upgraded from tickets as well. I just got the refunds back to the card we used for the upgrade (original tickets were purchased third party), and the refund amount only reflected the amount that we actually paid for the upgrade ($450), not the full AP amount (which at the time, January 2020, would have been $1,119). Had I known this, I'm not sure I would have elected for the closure period refund, because the alternative would have been an extension of the APs until 7/1/2021. If they do the same thing with with the full cancellation, we will have essentially paid $800 each for our tickets, which were used on a single trip. : (