code: def upgradedb(options):
      
      version = options.get('version')
      if version in ['1.1', '1.2']:
          sh("python manage.py migrate maps 0001 --fake")
          sh("python manage.py migrate avatar 0001 --fake")
      elif version is None:
          print "Please specify your GeoNode version"
      else:
          print "Upgrades from version %s are not yet supported." % version
docs: Add 'fake' data migrations for existing tables from legacy GeoNode versions