SPDocKit allows administrators to configure a schedule for creating an automatic snapshot of the SharePoint farm’s permissions state. When you enable this option, the SPDocKit Service will periodically take a snapshot of your SharePoint farm’s permissions and store them to SPDocKit database.
Please note! You can configure to automatically delete old permissions records using the SPDocKit service.
When using Permissions Explorer and Permissions Reports, you will be able to reload previously taken records by clicking on the preferred date-time marked entries from the Permissions Date filter. This filter contains both automatically and manually taken snapshots of your farm’s permissions state.