code: def after_import(self, dataset, result, using_transactions, dry_run, **kwargs):
          
          # Adapted from django's loaddata
          if not dry_run and any(r.import_type == RowResult.IMPORT_TYPE_NEW for r in result.rows):
              connection = connections[DEFAULT_DB_ALIAS]
              sequence_sql = connection.ops.sequence_reset_sql(no_style(), [self._meta.model])
              if sequence_sql:
                  cursor = connection.cursor()
                  try:
                      for line in sequence_sql:
                          cursor.execute(line)
                  finally:
                      cursor.close()
docs: Reset the SQL sequences after new objects are imported