Can we get refunds on a ticket we cancel (to get full value credit), but then later find out the flight itself has been canceled/removed from the schedule? I'm kicking myself for canceling April flights for the flight credit when it's highly likely they'll be outright canceled and I could have gotten a refund.
In a word, no. You may always ask, but given the cash crunch, I see little likelihood that AA -- or any carrier -- will spend cash it is not required to and, in this case, it does not have to.
For the broader audience, if you are considering cancelling and your flight is still operating, wait until the last minute to cancel. If the flight is cancelled or significantly changed as most flight are or will be, you are entitled to a refund.