Devise\Pages\PageManager::setTranslatedFromRouteName PHP Method

    protected function setTranslatedFromRouteName($fromPage, &$input)
    {
        if ($fromPage->translated_from_page_id) {
            $origPage = $this->Page->select('route_name')->findOrFail($fromPage->translated_from_page_id);
            $input['route_name'] = $origPage->route_name;
        } else {
            $input['route_name'] = $fromPage->route_name;
        }
    }