Imperixs

Hey fellas,   I had a 91 OVR Michael Vick that I completed from the legends set, wasn't too terribly fond of the card tbh.  If I recall correctly, I couldn't quick sell it or auction it, but it did mention "add to set" I went looking for a set that would take this card, couldn't find it.  So I figured, I'll add it to set and see where it goes, and pull it off.  Well it vanished, and I can't locate it anywhere, stupid me.  Can anyone that has a 91 OVR Vick card through the legends set confirm that you can/can't quick sell?  EA says I apparently discarded for 0 training points, and 0 coin, which.. who would do that?  Thx for the help.