diff --git a/modules/purchase_trade/docs/fees.md b/modules/purchase_trade/docs/fees.md
index cfb653f..3a60894 100644
--- a/modules/purchase_trade/docs/fees.md
+++ b/modules/purchase_trade/docs/fees.md
@@ -58,6 +58,18 @@ stocke sur `fee.fee.purchase`, cree pour facturer le service, ne doit jamais
 etre presente comme le contrat d'achat metier.
 
 Les statuts d'invoicing et de paiement des lots suivent les lots effectifs du
-fee. Le statut de paiement du fee consolide sa facture et son eventuelle
-DN/CN; il est `Paid` seulement si tous les documents concernes sont payes et
-`Partially paid` des qu'au moins un paiement existe sans paiement complet.
+fee. Le statut de paiement du fee distingue `Invoice paid`, `DN/CN paid`,
+`All paid` et `Not paid` selon le paiement complet de sa facture et de son
+eventuelle DN/CN.
+
+## Facturation depuis Invoice physical lots
+
+Le dialogue affiche les fees `ordered` des lignes correspondant au cote actif:
+
+- `Purchase`: fees des `purchase.line` des lots selectionnes;
+- `Sale`: fees des `sale.line` des lots selectionnes.
+
+Seuls les fees coches `To invoice` sont traites. En provisoire, un fee sans
+facture est facture normalement et un fee deja facture est ignore. En finale,
+un fee sans facture suit la facturation standard; un fee deja facture suit le
+flux DN/CN existant de `fee.fee.invoice`.
diff --git a/modules/purchase_trade/fee.py b/modules/purchase_trade/fee.py
index 58a5e1c..42150f3 100755
--- a/modules/purchase_trade/fee.py
+++ b/modules/purchase_trade/fee.py
@@ -1559,9 +1559,10 @@ class FeeReport(
         ('paid', 'Paid'),
         ], "Lot payment"), 'get_lot_payment_status')
     r_fee_payment_status = fields.Function(fields.Selection([
-        ('not', 'Not paid'),
-        ('partial', 'Partially paid'),
-        ('paid', 'Paid'),
+        ('not_paid', 'Not paid'),
+        ('invoice_paid', 'Invoice paid'),
+        ('dn_cn_paid', 'DN/CN paid'),
+        ('all_paid', 'All paid'),
         ], "Fee payment"), 'get_fee_payment_status')
     r_state = fields.Selection([
         ('not invoiced', 'Not invoiced'),
@@ -1661,14 +1662,27 @@ class FeeReport(
         _, _, invoices = self._lot_invoice_data(Fee(self.id))
         return self._invoice_payment_status(invoices)
 
+    @classmethod
+    def _fee_payment_status(cls, invoice, dn_cn):
+        invoice_paid = (
+            cls._invoice_payment_status(cls._unique_invoices([invoice]))
+            == 'paid')
+        dn_cn_paid = (
+            cls._invoice_payment_status(cls._unique_invoices([dn_cn]))
+            == 'paid')
+        if invoice_paid and dn_cn_paid:
+            return 'all_paid'
+        if invoice_paid:
+            return 'invoice_paid'
+        if dn_cn_paid:
+            return 'dn_cn_paid'
+        return 'not_paid'
+
     def get_fee_payment_status(self, name):
         Fee = Pool().get('fee.fee')
         fee = Fee(self.id)
-        invoices = self._unique_invoices([
-            fee.get_invoice('inv'),
-            getattr(fee, 'dn_cn', None),
-            ])
-        return self._invoice_payment_status(invoices)
+        return self._fee_payment_status(
+            fee.get_invoice('inv'), getattr(fee, 'dn_cn', None))
 
     def get_shipment_origin(self, name):
         if self.r_shipment_in:
diff --git a/modules/purchase_trade/lot.py b/modules/purchase_trade/lot.py
index 6cd673f..8c887de 100755
--- a/modules/purchase_trade/lot.py
+++ b/modules/purchase_trade/lot.py
@@ -25,7 +25,16 @@ from trytond.modules.purchase_trade.service import ContractFactory
 from trytond.modules.purchase_trade.company_defaults import (
     default_itsa_unit, is_itsa_company)
 
-logger = logging.getLogger(__name__)
+logger = logging.getLogger(__name__)
+
+
+def _fee_invoice_action(fee, invoice_action):
+    invoice = fee.get_invoice('inv') if fee else None
+    if invoice_action == 'final' and invoice:
+        return 'dn_cn'
+    if invoice:
+        return 'already_invoiced'
+    return 'standard'
 
 class LotAccountingGraph(ModelSQL,ModelView):
     "Lot accounting graph"
@@ -4667,7 +4676,7 @@ class LotInvoice(Wizard):
     def transition_start(self):
         return 'inv'
     
-    def default_inv(self, fields):
+    def default_inv(self, fields):
         lot_p = []
         lot_s = []
         fee_pur = []
@@ -4675,8 +4684,10 @@ class LotInvoice(Wizard):
         fee_sale = []
         pp_sale = []
         act = 'prov'
-        line = None
-        sale_line = None
+        line = None
+        sale_line = None
+        purchase_lines = []
+        sale_lines = []
         val = {}
         Lot = Pool().get('lot.lot')
         LotQt = Pool().get('lot.qt')
@@ -4690,7 +4701,9 @@ class LotInvoice(Wizard):
                 lot = lqts[0].lot_p
             else:
                 lot = Lot(i)
-            line = lot.line
+            line = lot.line
+            if line and line not in purchase_lines:
+                purchase_lines.append(line)
             if lot.line.purchase:
                 if lot.line.purchase.wb:
                     if lot.line.purchase.wb.qt_type in [e.quantity_type for e in lot.lot_hist]:
@@ -4715,7 +4728,9 @@ class LotInvoice(Wizard):
             unit = val['lot_unit']
             val['lot_currency'] = lot.lot_price_ct_symbol
             lot_p.append(val)
-            sale_line = lot.sale_line
+            sale_line = lot.sale_line
+            if sale_line and sale_line not in sale_lines:
+                sale_lines.append(sale_line)
             val_s = val.copy()  # ou utiliser deepcopy si certains champs sont des objets imbriqués
             val_s['lot_price'] = lot.lot_price_sale
             val_s['lot_amount'] = lot.get_current_quantity_converted() * lot.lot_price_sale if lot.lot_price_sale else Decimal(0)
@@ -4737,22 +4752,28 @@ class LotInvoice(Wizard):
             val_s['lot_currency'] = lot.lot_price_ct_symbol_sale
             val_s['lot_unit'] = sale_line.unit.id if sale_line else None
             lot_s.append(val_s)
-        if line:
-            if line.fees:
-                for f in line.fees:
-                    if f.type == 'ordered':
-                        val = {}
-                        val['fee'] = f.id
-                        val['fee_type'] = f.product.id
-                        val['fee_quantity'] = f.quantity
-                        val['fee_price'] = f.price
-                        val['fee_unit'] = line.unit.id
-                        val['fee_amount'] = f.amount
-                        val['fee_landed_cost'] = f.fee_landed_cost
-                        fee_pur.append(val)
-            if line.purchase:
-                Prep = Pool().get('account.invoice')
-                prep = Prep.search([('description','=','Prepayment'),('party','=',line.purchase.party.id),('state','!=','draft')])
+        seen_fees = set()
+        for purchase_line in purchase_lines:
+            if purchase_line.fees:
+                for f in purchase_line.fees:
+                    if f.type == 'ordered':
+                        fee_key = getattr(f, 'id', None) or id(f)
+                        if fee_key in seen_fees:
+                            continue
+                        seen_fees.add(fee_key)
+                        val = {}
+                        val['fee'] = f.id
+                        val['fee_type'] = f.product.id
+                        val['fee_quantity'] = f.quantity
+                        val['fee_price'] = f.price
+                        val['fee_unit'] = purchase_line.unit.id
+                        val['fee_amount'] = f.amount
+                        val['fee_landed_cost'] = f.fee_landed_cost
+                        fee_pur.append(val)
+        if line:
+            if line.purchase:
+                Prep = Pool().get('account.invoice')
+                prep = Prep.search([('description','=','Prepayment'),('party','=',line.purchase.party.id),('state','!=','draft')])
                 if prep:
                     for p in prep:
                         for li in p.lines:
@@ -4760,21 +4781,27 @@ class LotInvoice(Wizard):
                             val['inv'] = li.id
                             val['inv_amount'] = li.amount
                             pp_pur.append(val)
-        if sale_line:
-            if sale_line.fees:
-                for f in sale_line.fees:
-                    if f.type == 'ordered':
-                        val = {}
-                        val['fee'] = f.id
-                        val['fee_type'] = f.product.id
-                        val['fee_quantity'] = f.quantity
-                        val['fee_price'] = f.price
-                        val['fee_unit'] = sale_line.unit.id
-                        val['fee_amount'] = f.amount
-                        val['fee_landed_cost'] = f.fee_landed_cost
-                        fee_sale.append(val)
-            if sale_line.sale:
-                Prep = Pool().get('account.invoice')
+        seen_fees = set()
+        for current_sale_line in sale_lines:
+            if current_sale_line.fees:
+                for f in current_sale_line.fees:
+                    if f.type == 'ordered':
+                        fee_key = getattr(f, 'id', None) or id(f)
+                        if fee_key in seen_fees:
+                            continue
+                        seen_fees.add(fee_key)
+                        val = {}
+                        val['fee'] = f.id
+                        val['fee_type'] = f.product.id
+                        val['fee_quantity'] = f.quantity
+                        val['fee_price'] = f.price
+                        val['fee_unit'] = current_sale_line.unit.id
+                        val['fee_amount'] = f.amount
+                        val['fee_landed_cost'] = f.fee_landed_cost
+                        fee_sale.append(val)
+        if sale_line:
+            if sale_line.sale:
+                Prep = Pool().get('account.invoice')
                 prep = Prep.search([('description','=','Prepayment'),('party','=',sale_line.sale.party.id),('state','!=','draft')])
                 if prep:
                     for p in prep:
@@ -4842,10 +4869,33 @@ class LotInvoice(Wizard):
                         break
         if not invoice_line:
             raise UserError("No invoice line was generated from the selected lots.")
+        self._invoice_selected_fees()
         self.message.invoice = invoice_line.invoice
 
         return 'message'
 
+    def _invoice_selected_fees(self):
+        Fee = Pool().get('fee.fee')
+        fee_lines = (
+            self.inv.fee_pur
+            if self.inv.type == 'purchase' else self.inv.fee_sale)
+        fees = []
+        seen = set()
+        for line in fee_lines or []:
+            fee = getattr(line, 'fee', None)
+            if not getattr(line, 'to_invoice', False) or not fee:
+                continue
+            fee_key = getattr(fee, 'id', None) or id(fee)
+            if fee_key in seen:
+                continue
+            seen.add(fee_key)
+            action = _fee_invoice_action(fee, self.inv.action)
+            if action == 'already_invoiced':
+                continue
+            fees.append(fee)
+        if fees:
+            Fee.invoice(fees)
+
     @classmethod
     def _split_sale_padding(cls, padding, lots):
         padding = Decimal(str(padding or 0))
@@ -4983,19 +5033,31 @@ class LotInvoiceStart(ModelView):
     def default_type(cls):
         return 'purchase'
 
-class LotInvoicingFee(ModelView):
+class LotInvoicingFee(ModelView):
     "Fees"
     __name__ = "lot.invoicing.fee"
 
     lfs = fields.Many2One('lot.invoice.start',"Invoicing")
     fee = fields.Many2One('fee.fee',"Fee")
-    fee_type = fields.Many2One('product.product',"Fee type")
-    to_invoice = fields.Boolean("To invoice")
+    fee_type = fields.Many2One('product.product',"Fee type")
+    invoice_action = fields.Function(fields.Selection([
+        ('standard', 'Standard invoice'),
+        ('dn_cn', 'DN/CN'),
+        ('already_invoiced', 'Already invoiced'),
+        ], "Invoice action"), 'on_change_with_invoice_action')
+    to_invoice = fields.Boolean("To invoice", states={
+        'readonly': Eval('invoice_action') == 'already_invoiced',
+        }, depends=['invoice_action'])
     fee_unit = fields.Many2One('product.uom',"Unit",readonly=True)
     fee_quantity = fields.Numeric("Qt",digits=(1,5),readonly=True)
     fee_price = fields.Numeric("Price",digits=(1,4),readonly=True)
     fee_amount = fields.Numeric("Amount",digits=(1,2),readonly=True)
-    fee_landed_cost = fields.Boolean("To inventory",readonly=True)
+    fee_landed_cost = fields.Boolean("To inventory",readonly=True)
+
+    @fields.depends('fee', '_parent_lfs.action')
+    def on_change_with_invoice_action(self, name=None):
+        action = self.lfs.action if self.lfs else None
+        return _fee_invoice_action(self.fee, action)
 
 class LotInvoicingInv(ModelView):
     "Fees"
diff --git a/modules/purchase_trade/tests/test_module.py b/modules/purchase_trade/tests/test_module.py
index e4adc28..a9c54df 100644
--- a/modules/purchase_trade/tests/test_module.py
+++ b/modules/purchase_trade/tests/test_module.py
@@ -5897,7 +5897,7 @@ class PurchaseTradeTestCase(ModuleTestCase):
         self.assertEqual(FeeReport._invoice_payment_status([unpaid]), 'not')
 
     def test_fee_report_payment_status_includes_fee_dn_cn(self):
-        'fee payment status consolidates the invoice and its DN/CN'
+        'fee payment status distinguishes invoice and DN/CN payments'
         FeeReport = Pool().get('fee.report')
         report = FeeReport()
         report.id = 10
@@ -5916,10 +5916,28 @@ class PurchaseTradeTestCase(ModuleTestCase):
 
             self.assertEqual(
                 report.get_fee_payment_status('r_fee_payment_status'),
-                'partial')
+                'invoice_paid')
 
         fee.get_invoice.assert_called_once_with('inv')
 
+        unpaid_dn_cn.payment_lines = [SimpleNamespace()]
+        unpaid_dn_cn.amount_to_pay = Decimal('0')
+        with patch('trytond.modules.purchase_trade.fee.Pool') as PoolMock:
+            PoolMock.return_value.get.return_value = fee_model
+
+            self.assertEqual(
+                report.get_fee_payment_status('r_fee_payment_status'),
+                'all_paid')
+
+        unpaid = SimpleNamespace(
+            state='posted', payment_lines=[],
+            amount_to_pay=Decimal('5'))
+        self.assertEqual(
+            FeeReport._fee_payment_status(unpaid, unpaid), 'not_paid')
+        self.assertEqual(
+            FeeReport._fee_payment_status(unpaid, unpaid_dn_cn),
+            'dn_cn_paid')
+
     def test_sale_report_converts_mixed_units_for_total_and_words(self):
         'sale report totals prefer the virtual lot unit as common unit'
         Sale = Pool().get('sale.sale')
@@ -8315,6 +8333,68 @@ class PurchaseTradeTestCase(ModuleTestCase):
             lot_module.LotInvoice._split_sale_padding(Decimal('1000'), lots),
             {1: Decimal('500'), 2: Decimal('500')})
 
+    def test_lot_invoice_fee_action_follows_lot_invoice_stage(self):
+        'fee action is standard in provisional and DN/CN in final'
+        not_invoiced = Mock()
+        not_invoiced.get_invoice.return_value = None
+        invoiced = Mock()
+        invoiced.get_invoice.return_value = Mock()
+
+        self.assertEqual(
+            lot_module._fee_invoice_action(not_invoiced, 'prov'),
+            'standard')
+        self.assertEqual(
+            lot_module._fee_invoice_action(invoiced, 'prov'),
+            'already_invoiced')
+        self.assertEqual(
+            lot_module._fee_invoice_action(not_invoiced, 'final'),
+            'standard')
+        self.assertEqual(
+            lot_module._fee_invoice_action(invoiced, 'final'),
+            'dn_cn')
+
+    def test_lot_invoice_only_invoices_checked_fees_for_selected_side(self):
+        'lot invoice invoices only checked fees from purchase or sale side'
+        purchase_fee = Mock(id=1)
+        purchase_fee.get_invoice.return_value = None
+        ignored_purchase_fee = Mock(id=2)
+        ignored_purchase_fee.get_invoice.return_value = None
+        sale_fee = Mock(id=3)
+        sale_fee.get_invoice.return_value = None
+        wizard = SimpleNamespace(inv=SimpleNamespace(
+            type='purchase', action='prov',
+            fee_pur=[
+                SimpleNamespace(fee=purchase_fee, to_invoice=True),
+                SimpleNamespace(fee=ignored_purchase_fee, to_invoice=False),
+                ],
+            fee_sale=[SimpleNamespace(fee=sale_fee, to_invoice=True)],
+            ))
+        fee_model = Mock()
+
+        with patch('trytond.modules.purchase_trade.lot.Pool') as PoolMock:
+            PoolMock.return_value.get.return_value = fee_model
+
+            lot_module.LotInvoice._invoice_selected_fees(wizard)
+
+        fee_model.invoice.assert_called_once_with([purchase_fee])
+
+    def test_lot_invoice_final_invoices_checked_existing_fee_as_dn_cn(self):
+        'final lot invoice sends an already invoiced checked fee to Fee.invoice'
+        fee = Mock(id=1)
+        fee.get_invoice.return_value = Mock()
+        wizard = SimpleNamespace(inv=SimpleNamespace(
+            type='sale', action='final', fee_pur=[],
+            fee_sale=[SimpleNamespace(fee=fee, to_invoice=True)],
+            ))
+        fee_model = Mock()
+
+        with patch('trytond.modules.purchase_trade.lot.Pool') as PoolMock:
+            PoolMock.return_value.get.return_value = fee_model
+
+            lot_module.LotInvoice._invoice_selected_fees(wizard)
+
+        fee_model.invoice.assert_called_once_with([fee])
+
     @with_transaction()
     def test_invoice_line_included_padding_reads_sale_lot_padding(self):
         'invoice line exposes the sale provisional padding stored on the lot'
diff --git a/modules/purchase_trade/view/lot_invoicing_fee_tree.xml b/modules/purchase_trade/view/lot_invoicing_fee_tree.xml
index 9d33171..5b83394 100755
--- a/modules/purchase_trade/view/lot_invoicing_fee_tree.xml
+++ b/modules/purchase_trade/view/lot_invoicing_fee_tree.xml
@@ -5,5 +5,6 @@
    <field name="fee_price" width="80"/>
    <field name="fee_amount" width="100"/>
    <field name="fee_landed_cost" width="80"/>
+   <field name="invoice_action" width="110"/>
    <field name="to_invoice" width="60"/>
 </tree>
diff --git a/modules/purchase_trade/view/lot_invoicing_lot_fee.xml b/modules/purchase_trade/view/lot_invoicing_lot_fee.xml
index 929eb1c..6386c19 100755
--- a/modules/purchase_trade/view/lot_invoicing_lot_fee.xml
+++ b/modules/purchase_trade/view/lot_invoicing_lot_fee.xml
@@ -6,5 +6,6 @@
    <field name="fee_price"/>
    <field name="fee_amount"/>
    <field name="fee_landed_cost"/>
+   <field name="invoice_action"/>
    <field name="to_invoice"/>
 </tree>