We have a live and a dev server. On our dev server this works as expected. However, on our live server, the "Edit calculation" option does not show up. I have searched the forums with no luck. The only post that cam close mentioned the "Show calculations" setting in the Grader report settings under Site Administration. It was on as expected (this feature had been working on this installation before). I even toggled it off, cleared all the caches, and toggled it back on. No love.
Unfortunately, I have no way of knowing when it stopped working. And it's very strange that it still works on our dev server, as they should be essentially the same installs. Is there some other setting I'm not aware of? I just don't know what else to look at.