I have a layer in a map service where the symbology includes an excluded data value (in ArcMap, it's a graduated symbol with manual classes defined on a numeric field. I used the data exclusion dialog to exclude Nulls and have a symbol set for that too - see attached) but it does not show up in the REST endpoint legend or in the Silverlight Legend control. Is this a known limitation of the REST legend or a bug? I'm running v10.0 SP4. I've tried restarting the service & clearing the REST cache but the symbol still doesn't show up.