I put the code in for my Upgraded Red Sparrow on my Xbox 360. I then launched Destiny, and was able to grab the Upgraded Red Sparrow from the shop. Later, when I launched Destiny on Xbox One, I can't access the Upgraded Red Sparrow. While hovering over the description for the Sparrow S-10V, it says in red "Requires Preorder Exclusive."
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Many are having the same issue also with the red ghost, ship, and emblem from collector's editions, people have tried contacting bungie and activision but neither have responded