diff --git a/modules/purchase_trade/duplicate.py b/modules/purchase_trade/duplicate.py
index 595233e..4184856 100644
--- a/modules/purchase_trade/duplicate.py
+++ b/modules/purchase_trade/duplicate.py
@@ -290,6 +290,36 @@ class TradeCustomDuplicate(Wizard):
             'mirror_clear_pricing_components': False,
         }
 
+    @staticmethod
+    def _model_has_field(model, field):
+        fields_ = getattr(model, '_fields', None)
+        return isinstance(fields_, dict) and field in fields_
+
+    @staticmethod
+    def _party_address(party, type_=None):
+        address_get = getattr(party, 'address_get', None)
+        if address_get:
+            address = address_get(type=type_)
+            if address:
+                return address
+        addresses = list(getattr(party, 'addresses', None) or [])
+        return addresses[0] if addresses else None
+
+    @staticmethod
+    def _party_address_defaults(model, party):
+        defaults = {}
+        if TradeCustomDuplicate._model_has_field(model, 'invoice_party'):
+            defaults['invoice_party'] = None
+        if TradeCustomDuplicate._model_has_field(model, 'invoice_address'):
+            address = TradeCustomDuplicate._party_address(party, type_='invoice')
+            defaults['invoice_address'] = address.id if address else None
+        if TradeCustomDuplicate._model_has_field(model, 'shipment_party'):
+            defaults['shipment_party'] = None
+        if TradeCustomDuplicate._model_has_field(model, 'shipment_address'):
+            address = TradeCustomDuplicate._party_address(party, type_='delivery')
+            defaults['shipment_address'] = address.id if address else None
+        return defaults
+
     @staticmethod
     def _copy_contract(record, options):
         Model = Pool().get(record.__name__)
@@ -299,6 +329,8 @@ class TradeCustomDuplicate(Wizard):
             'payment_term': options.payment_term.id,
             'incoterm': options.incoterm.id,
         }
+        default.update(TradeCustomDuplicate._party_address_defaults(
+                Model, options.party))
         new_record, = Model.copy([record], default=default)
         new_record = Model(new_record.id)
         TradeCustomDuplicate._apply_party_addresses(new_record, options.party)
@@ -341,12 +373,18 @@ class TradeCustomDuplicate(Wizard):
 
     @staticmethod
     def _apply_party_addresses(record, party):
-        addresses = list(getattr(party, 'addresses', None) or [])
-        address = addresses[0] if addresses else None
+        invoice_address = TradeCustomDuplicate._party_address(
+            party, type_='invoice')
+        shipment_address = TradeCustomDuplicate._party_address(
+            party, type_='delivery')
+        if hasattr(record, 'invoice_party'):
+            record.invoice_party = None
         if hasattr(record, 'invoice_address'):
-            record.invoice_address = address
+            record.invoice_address = invoice_address
+        if hasattr(record, 'shipment_party'):
+            record.shipment_party = None
         if hasattr(record, 'shipment_address'):
-            record.shipment_address = address
+            record.shipment_address = shipment_address
 
     @staticmethod
     def _apply_line_options(record, options):
diff --git a/modules/purchase_trade/tests/test_module.py b/modules/purchase_trade/tests/test_module.py
index 6e4b843..4ab7784 100644
--- a/modules/purchase_trade/tests/test_module.py
+++ b/modules/purchase_trade/tests/test_module.py
@@ -8879,6 +8879,54 @@ description</t></is></c>
         self.assertFalse(line.finished)
         line.save.assert_called_once()
 
+    def test_custom_duplicate_copy_defaults_use_new_party_addresses(self):
+        'custom duplicate changes party dependent addresses during copy'
+        invoice_address = Mock(id=20)
+        shipment_address = Mock(id=30)
+        party = Mock(id=10)
+        party.address_get.side_effect = [invoice_address, shipment_address]
+        options = Mock(
+            party=party,
+            currency=Mock(id=40),
+            payment_term=Mock(id=50),
+            incoterm=Mock(id=60),
+        )
+        record = Mock(__name__='sale.sale')
+        created = Mock(id=70)
+        reloaded = Mock(id=70)
+        Model = Mock()
+        Model._fields = {
+            'invoice_party': None,
+            'invoice_address': None,
+            'shipment_party': None,
+            'shipment_address': None,
+        }
+        Model.copy.return_value = [created]
+        Model.return_value = reloaded
+        pool = Mock()
+        pool.get.return_value = Model
+
+        with patch.object(duplicate_module, 'Pool', return_value=pool):
+            result = duplicate_module.TradeCustomDuplicate._copy_contract(
+                record, options)
+
+        Model.copy.assert_called_once_with([record], default={
+            'party': 10,
+            'currency': 40,
+            'payment_term': 50,
+            'incoterm': 60,
+            'invoice_party': None,
+            'invoice_address': 20,
+            'shipment_party': None,
+            'shipment_address': 30,
+        })
+        self.assertIs(result, reloaded)
+        self.assertIsNone(reloaded.invoice_party)
+        self.assertIs(reloaded.invoice_address, invoice_address)
+        self.assertIsNone(reloaded.shipment_party)
+        self.assertIs(reloaded.shipment_address, shipment_address)
+        reloaded.save.assert_called_once()
+
     def test_custom_duplicate_creates_purchase_open_virtual_lot(self):
         'custom duplicate creates the purchase opening lot.qt explicitly'
         saved_lots = []