Restore: ID Reuse

SharePoint at times can reuse an objects ID, meaning object IDs in SharePoint are not always immutable.

During a restore process we look at object IDs to determine if they are missing in the source and need to be restored; however, the system can't at this time tell if a found object with the same ID as what is being restored is the same or something new with the ID reassigned.

In order to avoid duplicating all existing objects, and knowing that there is low likelihood of SharePoint reusing IDs most of the time the system has been designed to skip that object's restoration. 

A log entry will be make about this in the job's logs. The user will need to export the backup data and manually recreate the object if this happens.