Changing user in admin deletes UserProfile

[Jesaja Everling]

Hello everybody!

For me, changing a user in the admin interface, for example adding a first_name, deletes the corresponding UserProfile.
This doesn't happen when using the shell, only via the admin interface.
Both in current svn, and in 0.96.2.
I have created the UserProfile like so:

models.py:

class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True, edit_inline=models.TABULAR, num_in_admin=1,min_num_in_admin=1, max_num_in_admin=1, num_extra_on_change=0, core=True)

settings.py:

AUTH_PROFILE_MODULE = 'myapp.UserProfile'

It works great, just changing a user in the admin interface deletes the UserProfile.
If this is in any way related to a wrong setup on my side, please excuse this ticket!

Best Regards!