Nodereference referenceable file export/import fails

This is how content copy exports nodereference' referenceable types:

'referenceable_types' => 
    array (
      'group_organization' => true,
      0 => 1,
      'blog' => false,
      'book' => false,

This is how it expects them:

'referenceable_types' => 
    array (
      'group_organization' => 'group_organization',
      0 => 1,
      'blog' => false,
      'book' => false,

Result: no content types checked on configuration page of node reference field.

Thanks for this great module.