New feature released today, Inventory Upgrades Management Page. http://apps.facebook.com/zombieslayer/inventory/upgrade_items This will give you a quick view of all currently upgraded inventory along with a filtered and sortable view of available inventory to upgrade. A similar properties upgrade page is still in development, we'll keep you posted on a release date for that. If you see any bugs or issues please report them to the bugs/issues forum. Thanks! Eric.