Fuji's method is NOT working for me
I made the dumb mistake of purchasing and donating a card I already owned, and it messed up my whole order. Now nothing I do can bring the order back, or even establish a new order.
EDIT: I want to add that it momentarily STOLE my Gunter card. I was trying to move Gunter up a spot, so, like Fuji suggest, I sold Card A, then meant to sell the Gunter card (intending to then buy back Card A, buy back Gunter card, etc.) ... BUT when I clicked on the Gunter card to sell it, the iShop told me I DIDN'T OWN it. When I checked back in disbelief, sure enough, it was gone. I quickly bought it again, but gosh. Suppose that had been an out of stock card??
EDIT 2: Momentary glitch? It works now