We're currently using Jira's internal directory to keep the group "jira-software-users" and an LDAP-server for all other groups and users as seen in the picture.

What I'd now like to do is give up on the internal directory altogether and move "jira-software-users" (and preferrably other Jira groups like admins) into LDAP as well for easier maintenance.
However, as per https://confluence.atlassian.com/adminjiraserver/migrating-users-between-user-directories-938847059.html the "Additional Configuration & Troubleshooting" doesn't show me any option to move groups between user directories.
So my question is: is it possible at all to have "jira-*" groups in LDAP and LDAP only? And what would be a way to actually move them from the internal directory to our LDAP?
Many thanks in advance!