CMaps Analytics Extensions Data
CMaps Analytics has a number of extensions available which use the same CMaps Analytics JS API that you have access to. Additionally, CMaps Analytics Extension export options are avaialble on the export tab.
When you configure an extension Data Source, you are indicating that data will ultimately come from the extension and not from the map.
Planning for Extensions
In many cases it may be quicker to copy a subset of your data and paste it into CMaps Analytics for testing and validation of your data on a map. When you select extensions as the data source no options are available.