If an IP has multiple categories selected, you can remove the previously associated categories. A packaged IP must have at least one category to which it is associated.
To remove categories from your IP, select the category in the Categories section of the
Identification page and click the
Remove button 
.
You can additionally remove categories by de-selecting the categories from the IP Categories dialog box.
Note: The IP packager removes any custom IP categories that do not contain any IP.