Amazing work, Angela. I haven't really worked with CUI buttons before, only looked at it briefly once. If I understand your project correctly, essentially you are replacing the buttons with your own (directories "CommandBarItem", "CommandBarSection", "CommandBarSectionItem" and "PresentationConfiguration") that call your own methods (directory "Method")? I guess the key is inn.getItemById("Part", id);, when it uses the custom Part it seems like the caching gets screwed up or something.
Does your project overwrite the existing buttons? Or are they only added for the custom part?
