old_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.10.7 on 2017-07-04 02:26
  from __future__ import unicode_literals
  
  from django.db import migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('tracking', '0026_auto_20170616_1253'),
      ]
  
      operations = [
          migrations.RemoveField(
              model_name='device',
              name='usual_callsign',
          ),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.10.7 on 2017-07-04 02:26
  from __future__ import unicode_literals
  
  from django.db import migrations
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('tracking', '0026_usual_callsign_to_current_callsign'),
      ]
  
      operations = [
          migrations.RemoveField(
              model_name='device',
              name='usual_callsign',
          ),
      ]
  
subject: fix up migration dependency for 0027_remove_device_usual_callsign