Is there a way to remove users (not archive) after they've been imported into CLM?
One answer
I doubt that you can do it, unless you see such instructions. There are some consequences if you can delete users. For example, what about users that are already linked to work items? How should the work items be displayed without the linked user(s)? If you import a user with the same user ID, should it be treated as the same user as before the deletion or a new one?
Maybe consider changing the user IDs in CLM to match those in the new LDAP repository?
https://jazz.net/forum/questions/170292/how-do-i-handle-change-of-user-ids-from-federated-repo-to-ldap
https://rsjazz.wordpress.com/2012/10/12/changing-the-jazz-user-id-using-the-rtc-plain-java-client-libraries/
https://jazz.net/forum/questions/76988/how-to-change-an-ldap-userid
Comments
The user is mapped to an internal UUID, this is used internally to locate the user and store relationships. So you can change the user ID (used by LDAP) as discussed in https://rsjazz.wordpress.com/2012/10/12/changing-the-jazz-user-id-using-the-rtc-plain-java-client-libraries/ and keep all information. I would suggest to try this. The post refers to a tech note and just adds a more convenient way to do it for multiple users.
Backup your system be for you do. Just a good general approach.