diff --git a/assets/js/admin/meta-boxes-order.js b/assets/js/admin/meta-boxes-order.js
index e18837e3886..9c98574ac0a 100644
--- a/assets/js/admin/meta-boxes-order.js
+++ b/assets/js/admin/meta-boxes-order.js
@@ -1095,17 +1095,19 @@ jQuery( function ( $ ) {
 						item_to_add: add_item_ids,
 						dataType   : 'json',
 						order_id   : woocommerce_admin_meta_boxes.post_id,
-						security   : woocommerce_admin_meta_boxes.order_item_nonce
+						security   : woocommerce_admin_meta_boxes.order_item_nonce,
+						data       : $( '#wc-backbone-modal-dialog form' ).serialize()
 					};
 
 					$.post( woocommerce_admin_meta_boxes.ajax_url, data, function( response ) {
 						if ( response.success ) {
-							$( 'table.woocommerce_order_items tbody#order_line_items' ).append( response.data.html );
+							$( '#woocommerce-order-items' ).find( '.inside' ).empty();
+							$( '#woocommerce-order-items' ).find( '.inside' ).append( response.data.html );
+							wc_meta_boxes_order.init_tiptip();
+							wc_meta_boxes_order_items.stupidtable.init();
 						} else {
 							window.alert( response.data.error );
 						}
-
-						wc_meta_boxes_order.init_tiptip();
 						wc_meta_boxes_order_items.unblock();
 					});
 				}
diff --git a/includes/admin/meta-boxes/views/html-order-items.php b/includes/admin/meta-boxes/views/html-order-items.php
index 121c6cee6c4..d8c1f5a5be3 100644
--- a/includes/admin/meta-boxes/views/html-order-items.php
+++ b/includes/admin/meta-boxes/views/html-order-items.php
@@ -56,6 +56,7 @@ if ( wc_tax_enabled() ) {
 			foreach ( $line_items as $item_id => $item ) {
 				do_action( 'woocommerce_before_order_item_' . $item->get_type() . '_html', $item_id, $item, $order );
 
+				$class = isset( $new_item_ids ) && is_array( $new_item_ids ) && in_array( $item_id, $new_item_ids ) ? 'new_row' : '';
 				include( 'html-order-item.php' );
 
 				do_action( 'woocommerce_order_item_' . $item->get_type() . '_html', $item_id, $item, $order );
diff --git a/includes/class-wc-ajax.php b/includes/class-wc-ajax.php
index acf1f4f3085..c0a7cc1e57d 100644
--- a/includes/class-wc-ajax.php
+++ b/includes/class-wc-ajax.php
@@ -770,26 +770,29 @@ class WC_AJAX {
 			$order_id     = absint( $_POST['order_id'] );
 			$order        = wc_get_order( $order_id );
 			$items_to_add = wp_parse_id_list( is_array( $_POST['item_to_add'] ) ? $_POST['item_to_add'] : array( $_POST['item_to_add'] ) );
+			$new_item_ids = array();
 
 			if ( ! $order ) {
 				throw new Exception( __( 'Invalid order', 'woocommerce' ) );
 			}
 
-			ob_start();
-
 			foreach ( $items_to_add as $item_to_add ) {
 				if ( ! in_array( get_post_type( $item_to_add ), array( 'product', 'product_variation' ) ) ) {
 					continue;
 				}
-				$item_id     = $order->add_product( wc_get_product( $item_to_add ) );
-				$item        = apply_filters( 'woocommerce_ajax_order_item', $order->get_item( $item_id ), $item_id );
-				$order_taxes = $order->get_taxes();
-				$class       = 'new_row';
+				$item_id        = $order->add_product( wc_get_product( $item_to_add ) );
+				$item           = apply_filters( 'woocommerce_ajax_order_item', $order->get_item( $item_id ), $item_id );
+				$new_item_ids[] = $item_id;
 
-				do_action( 'woocommerce_ajax_add_order_item_meta', $item_id, $item );
-				include( 'admin/meta-boxes/views/html-order-item.php' );
+				do_action( 'woocommerce_ajax_add_order_item_meta', $item_id, $item, $order );
 			}
 
+			do_action( 'woocommerce_ajax_added_order_items', $item_id, $item, $order );
+
+			$data = get_post_meta( $order_id );
+
+			ob_start();
+			include( 'admin/meta-boxes/views/html-order-items.php' );
 			wp_send_json_success( array(
 				'html' => ob_get_clean(),
 			) );