Ultimate Use Code values

When I create Purchasing Attributes for an Item, it is populating a 'CA' in the Ultimate Use Code field, even though there are no Ultimate Use Codes set up in the system.  I'm concerned this happened as a result of the Item Conversion process, but it also populates the field when trying to ADD an Ultimate Use Code in the Common Definitions, Sales and Use Tax, even though there are no Ultimate Use Codes set up.  Has anybody had an issue like this?

Thanks.