Dumb VSC
As you posted earlier, my approval letter has the same problem. For some reason, they think I would go for AOS, although I checked for CP on 140 application. I am not sure what has gone wrong. I called the customer service center of uSCIS today. They said that I need to send a copy of my original 140 indicating that I chose CP from the begining along with the I 824. They said that I do NOT have to pay for 824 though.
Anyway because of this kind of error, my lawyer wants me to do 485. I will just do 485, i guess.