Perhaps I'm doing this wrong, but I normally start with a GPO Import baseline that I delete all settings, then manually add the settings I want in my new policy. But when I select Office 2013, the "Chose Source" pull down says 0 settings. I even
deleted and re-downloaded/installed the Office 2013 settings.
If I duplicate the Office 2013 Microsoft Baseline, I get the default values enabled and there is no way to change all to not-defined in my copy.