message: adding extra metrics after chart configuration
diff: @@ -141,8 +141,8 @@ export default function exploreReducer(state = {}, action) {
  if (controlName === 'metrics' && old_metrics_data && new_column_config) {
  value.forEach((item, index) => {
  if (
  - item.label !== old_metrics_data[index].label &&
  - !!new_column_config[old_metrics_data[index].label]
  + item?.label !== old_metrics_data[index]?.label &&
  + !!new_column_config[old_metrics_data[index]?.label]
  ) {
  new_column_config[item.label] =
  new_column_config[old_metrics_data[index].label];
  