[update] add payment_term_id on refund

wizard/account_invoice_refund.py

@@ -21,5 +21,6 @@ class ContributionAccountInvoiceRefund(models.TransientModel):
             'year': inv.year,
             'is_contribution': inv.is_contribution,
             'type_contribution_id': inv.type_contribution_id.id,
+            'payment_term_id': inv.payment_term_id.id,
         })
         return refund