I imported a bunch of users today and the users that were imported with a subscription to a product that includes subusers does not have the Sub User's menu option available to them. When I click on a user that was created with the signup form, I have the "sub users" button available. When I click on a user that was imported, the "sub users" button is not available. Is there an easy way to import sub-users and automatically tie them to their parent user? I don't want to have to manually enter the 50 sub-users that I have.