Talk:Upgrade/@comment-174.95.158.204-20150823232919/@comment-26896603-20150823234408

Copy and pasted from previous response:

If it's appearing over your cards in the Edit screen then this means your cards are currently in an elemental team used for the Elemental Hall (EH).

Go to the 3rd tab in Edit unit and replace the card with another if it's the last one in the unit. That card will be free for you to modify afterward since elemental teams can't be left empty.