After running a resultant set of policy (RSOP) within the Microsoft Group Policy Management Console, you may see a some settings which are listed under “Extra Registry Settings”. The primary cause for this is that the currently loaded set of ADM files for the GPMC do not match the version which was used to create the Group Policy. Frequently this is because the policy was configured on a different workstation than the one you are using to view the RSOP. Simply download the latest GPO ADM files from Microsoft’s website and apply them to the GPMC to have them show properly.
On the topic of Group Policy, don’t forget about the handy GPO Policy Reference worksheet found here: