Hi; during the development of this site I have created one or two back-end structures (eg. a category group) that eventually became redundant (the categories were replaced with a radio field). Obviously I’d like to delete database structures that are no longer needed, but I’m wary in case they’re in use by something that I’ve just forgotten about. Is there an simple way—other than examining every channel to see what its group assignments are—to check whether a particular category group (or channel field group, or status group) is in use anywhere within the site structure?