Thanks for the link. The delete is the key if the game already exists on the destination device. You should add to the instructions on your data sharing FAQ page that games can't be shared/merged/updated if the same game already exists on the destination device and that if you delete the game it wil...

I have set up teams and rosters using my iPad and they have synced to my iPhone. I scored our first game using the iPad and "ended" the game and emailed out the stats from the iPad, all looks good. I try to sync the completed game with the iPhone and the game shows up on the iPhone but as un-played....