Filter overrides in 'Attachment' display affect default filter values

Hi,

the following example shows a Page display of blog and story nodes (uses default filter settings) with an Attachment display attached after the display listing just blog nodes (using filter overrides). Views Calc displays the COUNT of each list. While the tables display the correct nodes, the COUNT uses the Attachment filter for calculating the totals for both displays.

Changing both displays to use filter overrides or moving the Attachment to before or after the page makes no difference.

$view = new view;
$view->name = 'views_calc_filter_bug';
$view->description = '';
$view->tag = '';
$view->base_table = 'node';
$view->human_name = 'View Calc filter bug';
$view->core = 6;
$view->api_version = '3.0-alpha1';
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Defaults */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->display->display_options['title'] = 'Views Calc filter bug';
$handler->display->display_options['access']['type'] = 'none';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'none';
$handler->display->display_options['pager']['options']['offset'] = '0';
$handler->display->display_options['style_plugin'] = 'views_calc';
$handler->display->display_options['style_options']['columns'] = array(
  'title' => 'title',
);
$handler->display->display_options['style_options']['default'] = '-1';
$handler->display->display_options['style_options']['info'] = array(
  'title' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'has_calc' => 1,
    'calc' => array(
      'COUNT' => 'COUNT',
    ),
  ),
);
$handler->display->display_options['style_options']['override'] = 1;
$handler->display->display_options['style_options']['sticky'] = 0;
$handler->display->display_options['style_options']['empty_table'] = 0;
$handler->display->display_options['style_options']['detailed_values'] = '0';
/* Field: Node: Title */
$handler->display->display_options['fields']['title']['id'] = 'title';
$handler->display->display_options['fields']['title']['table'] = 'node';
$handler->display->display_options['fields']['title']['field'] = 'title';
$handler->display->display_options['fields']['title']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['title']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['title']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['title']['alter']['external'] = 0;
$handler->display->display_options['fields']['title']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['title']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['title']['alter']['trim'] = 0;
$handler->display->display_options['fields']['title']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['title']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['title']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['title']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['title']['alter']['html'] = 0;
$handler->display->display_options['fields']['title']['element_label_colon'] = 1;
$handler->display->display_options['fields']['title']['element_default_classes'] = 1;
$handler->display->display_options['fields']['title']['hide_empty'] = 0;
$handler->display->display_options['fields']['title']['empty_zero'] = 0;
$handler->display->display_options['fields']['title']['hide_alter_empty'] = 0;
$handler->display->display_options['fields']['title']['link_to_node'] = 1;
/* Filter: Node: Type */
$handler->display->display_options['filters']['type']['id'] = 'type';
$handler->display->display_options['filters']['type']['table'] = 'node';
$handler->display->display_options['filters']['type']['field'] = 'type';
$handler->display->display_options['filters']['type']['value'] = array(
  'blog' => 'blog',
  'story' => 'story',
);

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page_1');
$handler->display->display_options['path'] = 'views_calc_filter_bug';

/* Display: Attachment */
$handler = $view->new_display('attachment', 'Attachment', 'attachment_1');
$handler->display->display_options['pager']['type'] = 'none';
$handler->display->display_options['pager']['options']['offset'] = '0';
$handler->display->display_options['defaults']['filters'] = FALSE;
/* Filter: Node: Type */
$handler->display->display_options['filters']['type']['id'] = 'type';
$handler->display->display_options['filters']['type']['table'] = 'node';
$handler->display->display_options['filters']['type']['field'] = 'type';
$handler->display->display_options['filters']['type']['value'] = array(
  'blog' => 'blog',
);
$handler->display->display_options['attachment_position'] = 'after';
$handler->display->display_options['displays'] = array(
  'page_1' => 'page_1',
  'default' => 0,
);
$translatables['views_calc_filter_bug'] = array(
  t('Defaults'),
  t('Views Calc filter bug'),
  t('more'),
  t('Apply'),
  t('Reset'),
  t('Sort by'),
  t('Asc'),
  t('Desc'),
  t('Title'),
  t('Page'),
  t('Attachment'),
);

/Kevin