I tried updating again in Chrome instead of Firefox but still didn't see any changes, so I'm not entirely sure what I'm doing wrong with the process. I suppose it's not possible I used the wrong link to get to the tool, since I can see my scenario in the list, I just can't update it. For now I've started compiling information in a word doc at least, so then I can add to the scenario once I know what I'm doing incorrectly.
January 2016