Saving In-App Purchases Iphone

Hey Guys,

Let me start with what I am trying to do:

I have a game on Iphone and I save some variables in PlayerPrefs, and then am able to rebuild the game off of those. The game lets you buy more items (consumable) with in app purchases, using urban airship for keeping track of reciepts and such. Keeping it simple.

Now I have been reading about options about how to restore this information if the player ever decides to delete the game from all their devices. From what I understand, if I store the player prefs on the iCloud, as soon as the game is deleted from the devices the information is also deleted from the iCloud.

If this is true, do I need to use a server to store the information as they play and just be constantly backing up their PlayerPrefs? Or is there another way to do this.

Thank You Very Much.