Batch convert revisions

When converting existing titles to the title field, using the UI "replace" link which starts the batch replacement process, only the current version of the field is converted. Revisions are not converted. I've handled this quickly using a custom update handler, but wanted to see if this is just on oversite, or something intentional? And if it's an oversite, should I create a patch for updating revisions dess?

  db_query('INSERT INTO {field_revision_title_field} (entity_type, bundle, deleted, entity_id, revision_id, language, delta, title_field_value, title_field_format) ' .
    'SELECT f.entity_type, f.bundle, f.deleted, f.entity_id, b.revision_id, f.language, f.delta, v.title, f.title_field_format ' .
    'FROM {field_revision_title_field} f ' .
    'INNER JOIN {field_revision_body} b ON f.entity_type = b.entity_type AND f.entity_id = b.entity_id ' .
    'INNER JOIN {node_revision} v ON b.revision_id = v.vid ' .
    'WHERE f.revision_id <> b.revision_id '
  );