[FIX] website_sale: don't carry over tx details on SO duplication

opw-617319

addons/website_sale/models/sale_order.py

@@ -22,8 +22,8 @@ class sale_order(osv.Model):
             help='Order Lines to be displayed on the website. They should not be used for computation purpose.',
         ),
         'cart_quantity': fields.function(_cart_qty, type='integer', string='Cart Quantity'),
-        'payment_acquirer_id': fields.many2one('payment.acquirer', 'Payment Acquirer', on_delete='set null'),
-        'payment_tx_id': fields.many2one('payment.transaction', 'Transaction', on_delete='set null'),
+        'payment_acquirer_id': fields.many2one('payment.acquirer', 'Payment Acquirer', on_delete='set null', copy=False),
+        'payment_tx_id': fields.many2one('payment.transaction', 'Transaction', on_delete='set null', copy=False),
     }
 
     def _get_errors(self, cr, uid, order, context=None):