Posted on September 8th, 2008
When editing a Group Policy in Group Policy Object Editor (gpedit.msc), the settings may be missing from a recently added custom template (.adm).
The adm template may be configured with a filter that hides the settings in it’s default view.
To disable the filter so that all settings can be edited, do the following:
Right click on the relevant user configuration | administrative template and select filtering
Unselect the option to ‘only show policy settings that can be fully managed’
All the settings will now appear and can be managed.