Newest Xbox one Marketplace Level & Inventory Loss

Single player private server, whether it's an old save or new world, when reloading world from saving and quitting game and or application all player inventory is wiped clean and last saved position is reset to world spawn location. 

No deaths, or otherwise have occurred, and issue has only begun as of the recent marketplace change to the mega-man offering. 

A timely fix would be welcomed, and thank you for any rapid responses.