Using ArcMap 10.1, I’m editing values in a feature class which was sent to me from within my organization. I realized I had a problem when trying to change the symbology of this feature class- the values I updated appear in the attribute table but some don’t appear in the Properties dialog box when I try to change the Symbology to categories/unique values (trying to visually highlight the new values I've added).
The structure of the attribute table cannot be changed as it was created to link with other systems. The problem is only occurring with one field; other fields which I updated do have their unique values appear in the Properties dialog box. I checked to see if this was created to be a Read-only field and it was not... Is there some protection on the feature class I don't know about? Did the edits I made somehow not get stored? Edits were made using field calculator + some manual edits in a Edit session which have all been saved.