1 files changed, 14 insertions, 2 deletions
diff --git a/addons/web/static/src/js/fields/relational_fields.js b/addons/web/static/src/js/fields/relational_fields.js
index c4422285ae7..f2cacb3327f 100644
--- a/addons/web/static/src/js/fields/relational_fields.js
+++ b/addons/web/static/src/js/fields/relational_fields.js
@@ -1033,13 +1033,25 @@ var FieldX2Many = AbstractField.extend({
      */
     _onResequence: function (event) {
         var self = this;
-        _.each(event.data.rowIDs, function (rowID, index) {
+        var rowIDs = event.data.rowIDs.slice();
+        var rowID = rowIDs.pop();
+        var defs = _.map(rowIDs, function (rowID, index) {
             var data = {};
             data[event.data.handleField] = event.data.offset + index;
-            self._setValue({
+            return self._setValue({
                 operation: 'UPDATE',
                 id: rowID,
                 data: data,
+            }, {
+                notifyChange: false,
+            });
+        });
+        $.when.apply($, defs).then(function () {
+            // trigger only once the onchange for parent record
+            self._setValue({
+                operation: 'UPDATE',
+                id: rowID,
+                data: _.object([event.data.handleField], [event.data.offset + rowIDs.length]),
             });
         });
     },