Setting userId: unsets UserProfile's password
Users can be renamed (by SystemUser), using the method UserProfile>>userId:.
This method has an undocumented effect of unsetting the password of the
UserProfile that was renamed.
userId: is deprecated in later releases, replaced by userId:password:.
Workaround
After sending userId:, the Administrator should send password: to set the
account's password. In later releases, userId:password: has been added,
and this should be used to rename users.
Last updated: 7/24/13