For what it's worth, I've discovered why the 20+ stuff does not load on Era - the file containing that part of the guide is not referenced in GuideList-classic.xml (which is what Era uses), so the file is never loaded there. You need to edit that file with the correct file reference to make it work on Era. There's no point in doing so except to check that it works, so I won't be more specific.
The file is correctly referenced in GuideList-forever.xml so it will work correctly on launch.