new_contents: from django.db import migrations
  
  
  def delete_hanging_bundle_auths(apps, schema_editor):
      Authorization = apps.get_model("users", "Authorization")
      Authorization.objects.filter(
          user=None,
          partners__authorization_method=3,  # using the actual number of Partner.BUNDLE
      ).distinct()  # distinct() required because partners__authorization_method is ManyToMany
  
  
  class Migration(migrations.Migration):
  
      dependencies = [("users", "0061_make_staff_superusers_wp_eligible")]
  
      operations = [migrations.RunPython(delete_hanging_bundle_auths)]
  
subject: Add migration to delete hanging bundle auths