Board Thread:Game Discussion/@comment-3531035-20131216183614/@comment-16151769-20131217002546

In the past, a card would upgrade faster during an episode, which they did away with. Also, in the past you earned more credit for selling in an episode, which I think they have also done away with. Although I don't pay attention to this anymore once you have ridiculous credits, so I can't say for sure.

What I can say for sure is that that upgrading prior to selling or foddering a card would be a drain on materials. Even just if you just transscan them, you get less out than you put in. So, use medals to either upgrade or sell straight up.