Several other problems:

1. These are not real bounded localities
2. Admin level 6 and 9 are a maintained import from PSMA https://wiki.openstreetmap.org/wiki/Import/Catalogue/PSMA_Admin_Boundaries

If you want to change how this is done please open a topic on the OSM community forum and outline why you want to change it https://community.openstreetmap.org/c/communities/oceania/73
3. Admin boundaries are advanced mapping. I would suggest that you at least wait until after you learn to use JOSM before attempting to edit them.

Thank you.