I exported user data from one CWIS site to another.
Exported and imported the APUsers and APUserPrivileges tables. The receiving site only had one user, so I only had to modify the data in the export for one user and one set of privileges to avoid clashes.
The new users appear on the /index.php?P=UserList page, but if I click Edit on any user but the pre-existing one, I get
No user was found.