old_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.15 on 2019-02-07 15:17
  
  
  from django.db import migrations
  from arches.app.models.system_settings import settings
  from arches.app.search.search_engine_factory import SearchEngineFactory
  from arches.app.search.mappings import prepare_terms_index, \
      prepare_concepts_index, prepare_search_index, prepare_resource_relations_index
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('models', '4658_adds_nodevalue_type_widget_config'),
      ]
  
      def forwards_func(apps, schema_editor):
          pass
  
  
      def reverse_func(apps, schema_editor):
          pass
  
      operations = [
          migrations.RunPython(forwards_func, reverse_func),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.15 on 2019-02-07 15:17
  
  
  from django.db import migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('models', '4658_adds_nodevalue_type_widget_config'),
      ]
  
      def forwards_func(apps, schema_editor):
          pass
  
  
      def reverse_func(apps, schema_editor):
          pass
  
      operations = [
          migrations.RunPython(forwards_func, reverse_func),
      ]
  
subject: fix invalid ref, re #8578