When you make changes to a policy and publish the changes, the policy version is incremented (for example, from version 1 to version 2). The old version is retained in case you want to use it as the basis for a new version of the policy.
If you don’t want to keep older versions of a policy, you can delete them. Doing so does not delete the currently published policy and does not affect the policy’s assignments.
To delete a version of a policy:
In ZENworks Control Center, click the Policies tab.
Double-click the policy to display its property pages.
In the Displayed Version field, select the version you want to delete.
Click Delete Selected Version.
The selected version is deleted and the published version is displayed.