App-V Editor Options Tab
In this dialog you can set options specific to App-V for a registry key.
Merge with real key
This option enables the virtual application to use this registry key for the registry entries of both real and virtual systems.
Overwrite real key
This option specifies that the virtual application will use this key only for the virtual registry entries.
Virtualize key as deleted
The virtual system will render this key as deleted for the application.