I ran into an interesting situation today. I am doing some spatial reference changes to an SDE geodatabase. For the most part, my process of changing the spatial reference, updating the X/Y coordinates of the features and then updating the domain, extent and spatial indexes is working well. But I have this one feature class that has no features yet the extent of the layer when added to a map shows up with values in the old coordinate system. Given that I've changed the spatial reference already, I get the warning of inconsistent extent. If I use IGeoDataset.Extent, I get an empty envelope. I've called IFeatureClassManage.UpdateExtent and I still get an empty envelope from IGeoDataset.Extent and still get the inconsistent extent warning when adding to a map. In the end, I had to add a feature, make sure the extent it updated to valid coordinates, then delete the feature. The updated extent still shows in a map and the IGeoDataset.Extent is still empty. Other empty FeatureClasses don't show any extent when adding to a map.
Any ideas where this FeatureClass might still be holding on to some extent value that I'm missing? Thanks.
