This is due to a setting selected when creating and then locking the Production.
The eDiscovery Platform provides three options for production: Images, Native, and Mixed-mode.
When Image production is chosen, all documents are imaged which can then be delivered to the requesting party. Each page in the document that is imaged will have a unique Bates number.
For Native productions, documents are produced in their Native format as opposed to getting imaged. There is one Bates number generated per document (as opposed to each page within the document).
Mixed-mode productions enables choosing the file types to be produced as images and those to be produced in their native format. Mixed-mode productions become useful under the following conditions:
An Image production will number each page of a file and a Native production will number each file.
This can be set when creating the Production folder under the General Tab:
This setting cannot be altered when the Production is locked.
Please note that unlocking a Production will have an effect on the numbering and may effect previously output productions.