[Suggestion]Please allow giveaway creator to see the key used if the giveaway receives 0 entries

I have a group giveaway that received 0 entries. The problem is I mark key as sent in my records when I create the giveaway, as I both trade and give away games.
Is there a way to see the key that went to the 0 entries giveaway? I already have the game, and I tried to use old keys for that game, but it always says you have the game, do you want to install it on steam regardless if the key is used or not. If it is not possible to do that, I would like to propose a new steamgift feature to give you access to the 0 entries keys.