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Add meta key "tracking_numbers" and put following code to "Misc Settings"



add_filter('woe_get_order_value_tracking_numbers', function ($value, $order,$field) {
    if( class_exists("WC_Shipment_Tracking_Actions") ) {
        $st = WC_Shipment_Tracking_Actions::get_instance();
        $tracking_items = $st->get_tracking_items( $order->get_id() );
        $numbers = array();
        foreach($tracking_items as $item)
            $numbers[] = $item['tracking_number'];
        $value = join(", ", array_filter($numbers)) ;
    }
    return $value;
}, 10, 3);