Web Maps with CSV Operational Layers not supported?

Hi:

This webmap has an operational layer that points to a csv file on a web server:

http://www.arcgis.com/home/webmap/vi...e59850700e6592

If above url is truncated, itemid is: abc34ec59ee44df59be59850700e6592

The ArcGIS Viewer for Flex 3.0 does not appear to recognize the layer. Can you confirm that this is by design or am I doing something wrong?

Thanks,
Matt English
Esri Canada