Overview

Your collections are important to us and we want to make sure we don’t invalidate the time you’ve spent expanding and developing them. This new system fundamentally changes the way Heroes work, so we’ll be using the recently introduced Item Reset feature to make all your heroes eligible for a reset.
— Epic Games

The Item Reset Feature is a feature in Fortnite: Save the World that allows you to reset Heroes, Schematics, and Survivors back to Level 1, which gives you the resources you invested in them back.