Deleting ingredient: You uncovered an interesting issue. The change that I made in V184.108.40.206 allows you to now delete a nicotine ingredient when it is no longer being used. The problem that you are still seeing has to do with a problem that was created when I wasnt allowing you to delete the nicotine ingredient. Although you switched your recipe from say NicotineEntry1 to NicotineEntry2, I left an association of NictotineEntry1 to the recipe even though the recipe is using "NicotineEntry2". I am working on a fix for this. Saving in a new folder: I am not sure that I understand the issue that you are having. I am going to PM you with some more detailed questions on the scenario that you are seeing.