In your installation of Clearspace, what is the difference between an external and full user of Clearspace. Is it just a matter of permissions for the individual user? If so, you can go to your Admin Console > Communities Tab > Permissions Sub-Tab. You can elevate the permissions for a specific user for a given community. Depending on how you limit the permissions of users there may be other places that you would need to make a change too.
Jive Certified Clearspace Developer
The external user was created when I allowed an external email address access to view a document in Clearspace. This email then becomes a user in Clearspace, but does not take up a full seat license. This is a great feature, but when I now want to make this user a full fledge Clearspace user, I cannot create a new user with the same email address even if that email/user account is disabled. I need to be able to fully delete the user account to do this.
I checked as you suggested about using the space persmissions, but external users are not listed with the user picker. So I can't use that either. Thanks though.