I found CS96881 which states you are not able to pass the context ID as an input parameter like you could in 9.1. Bummer since this allowed you to create reports and run them from within a product area and it only showed data from that contact. Is this possible in any other way? I would accept a context lookup field like the "Change Notice Log" report. Something that users can run that autoselects the contex that they are in by default and runs with that as a condition.