Essentials (groupmanager) + Multiverse Problem

users:
  Puni:
    group: Owner
    subgroups: []
    permissions:
    
  Llorp:
    group: Admin
    subgroups: []
    permissions:
    
  Roman:
    group: Admin
    subgroups: []
    permissions:

  Hellrocker:
    group: Admin
    subgroups: []
    permissions:

settings:
  config:
    # With this enabled anyone set as op has full permissions when managing GroupManager
    # The user will be able to promote players to the same group or even above.
    opOverrides: true
    
    # Default setting for 'mantoglevalidate'
    # true will cause GroupManager to attempt name matching by default.
    validate_toggle: true
    # **********************************************************************************************************************************
    # *** NOTE: Having this feature enabled, improper use of commandblocks will lead to undesireable permission changes, be alarmed! ***
    # **********************************************************************************************************************************
    allow_commandblocks: false
    
  data:
    save:
      # How often GroupManager will save it's data back to groups and users.yml
      minutes: 10
      # Number of hours to retain backups (plugins/GroupManager/backup)
      hours: 24
      
  logging:
    # level of detail GroupManager will use when logging.
    # Acceptable entries are - ALL,CONFIG,FINE,FINER,FINEST,INFO,OFF,SEVERE,WARNING
    level: INFO
    
  mirrors:
        # Worlds listed here have their settings mirrored in their children.
        # The first element 'world' is the main worlds name
        # subsequent elements 'world_nether' and 'world_the_end' are worlds which will use
        # the same user/groups files as the parent.
        # Each child world can be configured to mirror the 'groups', 'users' or both files from it's parent.
        world:
          world_nether:
          - users
          - groups
          world_the_end:
          - users
          - groups
    #  world2:      (World2 would have it's own set of user and groups files)
    #    world3:
    #    - users    (World3 would use the users.yml from world2, but it's own groups.yml)
    #    world4:
    #    - groups   (World4 would use the groups.yml from world2, but it's own users.yml)
    #  world5:
    #    - world6   (this would cause world6 to mirror both files from world5)