message: Fixes Updated Letter.clearProps after merge
diff: @@ -37,7 +37,8 @@ export default class Letter {
  information_block: '',
  subject: '',
  content: '',
  - signature: {type: 'text', value: '', name: ''}
  + signature: {type: 'text', value: '', name: ''},
  + reference_barcode: props.reference_barcode
  };
  }
  