Thanks for the suggestions. It turns out that adding sections to the report caused the chart to be drawn as hoped. Probably something related to the runningsum() variables.
My running sum is =RunningSum([Dollar amount];([Quarter];[Territory]))
My first file the reports were made using sections on Territory (thus including the field that is in the variable) and filtering them using Input Controls for each of my different Territory reports.
If I excluded the Territory from the Chart, like I would for a WW report, and use Input Controls to filter the data, the data points re-appeared.