Editions in the cube

Hello,

I've been uploading my decks on the site (with the premium trial).
It's neat that you can specify which edition of a card you use in a deck, but when I added my cube to the site, I couldn't find the option. I've added the 700+ cards, but I can't find how to choose the editions.

Have I missed something ? (If not, then take it as a suggestion for a future feature )

Thanks !