public function BackLinkTracking()
    {
        // @todo - Implement PolymorphicManyManyList to replace this
        $list = ArrayList::create();
        foreach ($this->BackLinks() as $link) {
            // Ensure parent record exists
            $item = $link->Parent();
            if ($item && $item->isInDB()) {
                $list->push($item);
            }
        }
        return $list;
    }