A friend of mine having Xbox One was trying to access their China Rising content for the first time, he was told to re-purchase or download China Rising when trying to access their game content as he did not find it in the Xbox LIVE Marketplace.
In case you have the same issue , try the following:
Instead, you'll find your content under the Premium category in the In-Game Store. You'll see a price listed for China Rising, however when you get the Microsoft pop-up to confirm your purchase, you'll either see your content listed as Free or an option to download your content again if you've already had access.
Let me know if that worked for you.