I have encountered an application issue that I know has a bug assigned in both Launchpad and the external tracker the application project actually uses (in this case Google Code). I understand that Launchpad can integrate with external trackers (and can see an example assigned against another package in this bug).
I have a Launchpad login. I can click on the pencil icon next to the status to change it (for example, change to "Confirmed") but I don't get an option to associate the bug with an external issue, which is what I actually want to do. Do I not have permission to, or is there some other option that I'm missing?