Following are instructions for modifying an existing purge batch:
Log in using the Projects Implementation Superuser responsibility. See: Assigning Purge Responsibility.
Navigate to the Purge Batches window (from the Projects Implementation Superuser responsibility, choose Purge Project Data).
In the Batch Name field, query the batch name.
To add projects to an existing batch using selection criteria, choose Generate Details. In the Generate Details, set criteria for the list of projects you want to add to the batch, and then choose Generate.
To add or remove individual projects, or change the purge options at the project level, choose Edit Details.
In the Purge Batch Details window, use the poplist to view the alternative areas.
To add or remove a project from the list, choose Project Information.
To change the purge options for a project (if you have permission to change the purge options), choose Purge Options.
Proceed with the review, validation, release, and initiation steps. See: Review and Refine the List.