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FAQ: Why is the same thumbnail used for all feature classes in coverage, CAD and VPF data?

Question

Why is the same thumbnail used for all feature classes in coverage, CAD and VPF data?

Answer

Coverage, CAD, VPF, and some raster data formats can only have metadata stored for the entire data set and not on a per-feature class or per-raster band basis. When a thumbnail is created for a particular feature class, all other feature classes within the data set will use the same thumbnail.