1. A method of managing backup data, the method comprising: accessing, via a backup manager, index data of an initial snapshot; accessing, via the backup manager, index data of a subsequent snapshot; determining, via the backup manager, whether the index data of the subsequent snapshot is different from the index data of the initial snapshot; responsive to a determination that the index data of the subsequent snapshot is different from the index data of the initial snapshot, creating an updated index data; and creating an updated snapshot with the updated index data.