PROBLEM
After joining a table to a layer attribute table, the layer doesn't draw, or it is symbolized incorrectly.
This is a known issue. Fields in a joined table use altered field names. For example, a field named population in the layer will be called layername.population.
Since the joined fields have different names, ArcMap can't find the symbology field. The first field in the join layer is used by default. Since the data in this field doesn't match the symbology classes, features are drawn with the wrong symbols, or are not drawn at all.
Article ID:000004412
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