We are planning to buy the Enterprise Edition and we would like to to migrate from Gitlab SSO to Active Directory, while keeping all the history/permissions and whatever attributes of each user.
In our current setup Gitlab brokers the authentication to Active Directory, so the existing users on gitlab/mattermost all come from Active Directory.
So the question is, how can we ensure that all users keep their own settings as they are, after switching the authentication mechanism to Active Directory/LDAP?
P. S. Previously we have switched from one gitlab setup to another and at that point in time it was easier to start over. Mattermost used the ID number of the users instead of the e-mail addresses/usernames and we’re really concerned about this if we switch the authentication.