SonarQube Enterprise EditionVersion 8.9.8 (build 54436) have some login issue

Version: SonarQube Enterprise EditionVersion 8.9.8 (build 54436)
plugin: https://github.com/hkamel/sonar-auth-aad

Currently, we are using LDAP as authentication with email account
but in future, we also want to support office 365 authentication together with LDAP
but office 365 and LDAP have same username and email account
checked log have error saying username already used, so we deactivate the old LDAP user in SonarQube and then we are able to login with office 365, however, need to assign permission and role to the user again to office 365 user

Want to ask If we are able to keep old LDAP users in SonarQube and able to login with office 365?

Take a look at this guide: