I have an Autocad dwg which consists of polylines and polygons - these have the Object Data table attached which define them. I have saved this dwg multiple times and also have converted the dwg to shape files. I now want to go back into the cad dwg and change the "field names" in the Object Data Table. This is where I run into problems. I cannot change the "field names". I have tried changing my login to the superuser login before I open the dwg and also when I am in the dwg. I type in adedefdata and then go to the Modify button -click on that and I can add or delete, I can even change the type(character, point etc) and also change the table name and use the Update and it changes the table BUT i cannot change the field name - the "Update" button is always grayed out. Any insight as to what I can further do.
thanks for any help
Brenda