If you no longer need a particular imposition plan in your job you can remove or destroy it. Whether you remove or destroy an imposition plan depends on whether you will need the job's input files, pages, or page sets again.
Removing
You remove an imposition plan using the Remove Imposition menu item.
When you remove an imposition plan, it disappears from the Imposition Plans pane of the Signatures view from the Separations view and from the Storage view. Any references to it are deleted from the database.
Any input files pages, and page sets associated with the imposition plan are not deleted; they continue to appear in Job Manager.
Destroying
You destroy an imposition plan using the Destroy Imposition menu item.
While Remove Imposition removes only the imposition plan from the job (and not associated pages or page sets), Destroy Imposition destroys the imposition plan as well as its associated input files, pages, and page sets. Destroying an imposition plan enables you to remove a job's files while retaining its settings, such as the image search path. Once an imposition plan is destroyed, you cannot retrieve it or its associated files. Therefore, if you think that you might need the job's input files, pages, or page sets again, consider removing the imposition plan rather than destroying it.
When you destroy an imposition plan it disappears from the Imposition Plans pane of the Signatures view, from the Separations view, and from the Storage view. Any references to it are deleted from the database.
As well, any page set linked to the imposition plan, pages assigned to the imposition plan, and input files from which those pages originated disappear from the Pages, Signatures, and Storage views of Job Manager, and any references to those files are deleted from the database. Any pages that were assigned to the imposition plan are also removed from the job folder. Any input files from which those pages originated are removed from their original input volume.
Note: If you try to destroy an imposition plan but another imposition plan in the same job is using the same input files, pages, or page sets, the system will not destroy them.