Lost Context sensitive DFFs on Asset Categories after a category reclass

When I manually change the category on an asset, the Asset Categories DFFs that are context-sensitive on category name become blank. When I checked in the fa_additions table, attribute_category_code and context were both correctly updated with the new category name, but the context-sensitive DFFs became blank. The Global DFFs were ok and not changed.

Is this a known bug or is there a setting that I can change to correct this?

Thanks,

Jo