I am currently on 15/25 completion of stage three of April monthly awards and I figured since I had a lot of silver pitchers, I'd exchange them via the stage 2 exchange mission. When I exchanged it, I was not rewarded with the ten monthly awards points nor was I given my cards back. When I check the mission it tells me that I cannot view a mission that is already complete. Is it not possible to complete missions from stage 1 or 2 for rewards when you're already in stage 3?