if you do it from the pack opening screen. Once you back out though you are out of luck. Just sold 4 silver yankee doubles from the granderson mission this way. I'd rather be able to exchange but whatever I guess.
No you can’t. You don’t get the stubs and still have the card
[censored] you're right. Well never mind again. Lol
they said sold, but I guess I didn't pay attention to my stub count.