old_contents: from django.core.management import call_command
  from django.db import migrations
  
  from django_prbac.models import Role
  
  from corehq.apps.accounting.management.commands.change_role_for_software_plan_version import (
      change_role_for_software_plan_version, OldRoleDoesNotExist, NewRoleDoesNotExist,
  )
  from corehq.util.django_migrations import skip_on_fresh_install
  
  
  @skip_on_fresh_install
  def _consolidate_enterprise_v1_into_v0(apps, schema_editor):
      try:
          change_role_for_software_plan_version('enterprise_plan_v1', 'enterprise_plan_v0')
      except OldRoleDoesNotExist:
          # no role exists for enterprise_plan_v1 which is fine
          pass
  
      # after updating software plan versions to reference v0, add release management to enterprise_v0 via boostrap
      call_command('cchq_prbac_bootstrap')
      # delete the enterprise_plan_v1 role now that all active plans have been updated
      role = None
      try:
          role = Role.objects.get(slug='enterprise_plan_v1')
      except Role.DoesNotExist:
          pass
      if role:
          # change_role_for_software_plan_version should ensure there aren't any more versions referencing this role
          role.delete()
  
  
  class Migration(migrations.Migration):
      dependencies = [
          ('accounting', '0059_add_lite_release_management_priv'),
      ]
  
      operations = [
          migrations.RunPython(_consolidate_enterprise_v1_into_v0),
      ]
  
new_contents: from django.core.management import call_command
  from django.db import migrations
  
  from django_prbac.models import Role
  
  from corehq.apps.accounting.management.commands.change_role_for_software_plan_version import (
      change_role_for_software_plan_version,
      OldRoleDoesNotExist
  )
  from corehq.util.django_migrations import skip_on_fresh_install
  
  
  @skip_on_fresh_install
  def _consolidate_enterprise_v1_into_v0(apps, schema_editor):
      try:
          change_role_for_software_plan_version('enterprise_plan_v1', 'enterprise_plan_v0')
      except OldRoleDoesNotExist:
          # no role exists for enterprise_plan_v1 which is fine
          pass
  
      # after updating software plan versions to reference v0, add release management to enterprise_v0 via boostrap
      call_command('cchq_prbac_bootstrap')
      # delete the enterprise_plan_v1 role now that all active plans have been updated
      role = None
      try:
          role = Role.objects.get(slug='enterprise_plan_v1')
      except Role.DoesNotExist:
          pass
      if role:
          # change_role_for_software_plan_version should ensure there aren't any more versions referencing this role
          role.delete()
  
  
  class Migration(migrations.Migration):
      dependencies = [
          ('accounting', '0059_add_lite_release_management_priv'),
      ]
  
      operations = [
          migrations.RunPython(_consolidate_enterprise_v1_into_v0),
      ]
  
subject: remove unused import