A schematic dataset created with the pre-10 Schematics extension can be opened within Schematic Dataset Editor, but no modifications can be made to it. A pre-10 schematic dataset must be migrated into a new schematic dataset before being edited in Schematic Dataset Editor.
- Start ArcCatalog.
- Right-click the schematic dataset you want to edit in the Catalog tree.
- Click Edit.
The Schematic Dataset Editor launches and your schematic dataset configuration parameters are displayed.