Nextcloud Appliance up and running, LDAP AD question, incomplete userlist from AD

Hi all,
nextcloud Appliance is up and running. The installation is AD intergrated. I see our AD structure but only 40 users accounts out of 72.

  1. on my old owncloud server, I have LDAP query string, where to add this in nextcloud
  2. where to check/alter LDAP / AD connection (user/password)
  3. is there a way to migrate the config (users/groups/…) from an old 8.0.2 owncloud / Windows
    Server to my new nextcloud appliance.

Appreciate any help, cheers … jr

strange, on the WebGUI AD Connection not running but on the console, status is ok ?