diff --git a/pos_order_return/models/pos_order.py b/pos_order_return/models/pos_order.py
index 8d45c3cb..fa7e93c2 100644
--- a/pos_order_return/models/pos_order.py
+++ b/pos_order_return/models/pos_order.py
@@ -72,12 +72,13 @@ class PosOrder(models.Model):
         for line in self.lines:
             qty = - line.max_returnable_qty([])
             if qty != 0:
-                copy_line = line.copy()
-                copy_line.write({
-                    'order_id': new_order.id,
-                    'returned_line_id': line.id,
-                    'qty': qty,
-                })
+                line.copy(
+                    {
+                        'order_id': new_order.id,
+                        'returned_line_id': line.id,
+                        'qty': qty,
+                    }
+                )
         return res
 
     def partial_refund(self, partial_return_wizard):
@@ -87,12 +88,15 @@ class PosOrder(models.Model):
         for wizard_line in partial_return_wizard.line_ids:
             qty = -wizard_line.qty
             if qty != 0:
-                copy_line = wizard_line.pos_order_line_id.copy()
-                copy_line.write({
-                    'order_id': new_order.id,
-                    'returned_line_id': wizard_line.pos_order_line_id.id,
-                    'qty': qty,
-                })
+                copy_line = wizard_line.pos_order_line_id.copy(
+                    {
+                        'order_id': new_order.id,
+                        'returned_line_id': wizard_line.pos_order_line_id.id,
+                        'qty': qty,
+                    }
+                )
+                copy_line._onchange_amount_line_all()
+        new_order._onchange_amount_all()
         return res
 
     def action_pos_order_paid(self):
diff --git a/pos_order_return/readme/CONTRIBUTORS.rst b/pos_order_return/readme/CONTRIBUTORS.rst
index 4e1bf63f..d3125401 100644
--- a/pos_order_return/readme/CONTRIBUTORS.rst
+++ b/pos_order_return/readme/CONTRIBUTORS.rst
@@ -1,3 +1,4 @@
 * Sylvain LE GAL <https://twitter.com/legalsylvain>
 * David Vidal <david.vidal@tecnativa.com>
 * Kiril Vangelovski <kiril@lambda-is.com>
+* Druidoo <https://www.druidoo.io>