For insights like Campaign Funnel, Dasheroo requires that you save the "Campaign Goal Completion" reports and "Sequence Step Recipients" reports in Infusionsoft. This is because Infusionsoft doesnt support the API that will help us show these insights . The only way to get the data to show the visualizations for these insights is to read from saved reports.
In order to see campaign funnel insight for a specific campaign, make sure to save the two reports mentioned above that has details about the campaign you want to see in dasheroo. Once in Dasheroo you can choose the reports that you have saved to see the campaign funnel visualization for the campaign of your choice.