Thanks for the response. I do have an organizational account and I took your advice and tested both methods - publishing as a tiled map service and as a hosted service. In both cases I ended up with the same result in ArcGIS Online, which is a dataset with NO symbology though in the preview window before publishing it shows up correctly. Could this result be a function of the fact that my dataset is normalized, has a manual classification and has data excluded?
... View more