Changing the ExtendedModuleUID will make sure that you can't load the add-in in DAO anymore because now the extended module is Awakening. The ExtendedModuleUID just sets if you want to get the add-ins in Origins or Awakening working. So, if I were to copy and paste the relevant entry, and modify the ExtendedModuleUID on only the cloned entry, I presume that would permit me to have the No-Helmet hack work for both Origins and Awakening, correct? (I want no helmets, but I don't want to have to change the addins.xml every time I want to play the original campaign) That's what I did. Just copy the .xml file, then change the original to match up the expansion and make a copy of it then. Note one as "Single player" and one as "Expansion" and whenever you change, just delete the XML file, copy the relevant one, and rename it.