Badmanj - if you email our
support ninjas we can get you an answer on this. We collectively browse the forums as we're able on top of our other duties, but we released the iPad version of OmniOutliner on Thursday last week, so folks don't have as much bandwidth to look at the forums as they would in a more typical week. I'm winding down at the end of the day and saw this, but I'm not an OmniGraffle expert.
(By contrast, we have dedicated staff that are experts in each app and answer support mail, so we can make a stronger guarantee.)