Walt Disney World has changed their procedures for the recovery of lost items while on property. The new system uses a cloud database for guests to register what items they have lost. Once the online form is filled out reporting the missing item, you guests will receive an email notification with your Lost Item claim number. Cast Members will look for your item and provide you with an email update within 48 hours.
You can find out a little more about how the system works at the links below.
https://disneyworld.disney.go.com/en_CA/guest-services/lost-and-found/