Trading screen

I have all the foil swamps from Graveborn, someone asked for one in a trade and I told him to just add the art he liked. After the trade was confirmed it no longer shows me which art/card number was selected, so I don't know which one to package without asking again.  This is a minor inconvenience, but having to ask can cause delays in shipping.  The image was there before we both confirmed, so why is it just showing Graveborn Swamp with no image icon now?