diff --git a/__init__.py b/__init__.py
index 6f72541846..fbeaafa443 100644
--- a/__init__.py
+++ b/__init__.py
@@ -37,6 +37,7 @@ def register():
         sale.HandleShipmentException,
         module='product_kit', type_='wizard', depends=['sale'])
     Pool.register(
+        sale.Amendment,
         sale.AmendmentLine,
         module='product_kit', type_='model', depends=['sale_amendment'])
     Pool.register(
@@ -52,5 +53,6 @@ def register():
         purchase.HandleShipmentException,
         module='product_kit', type_='wizard', depends=['purchase'])
     Pool.register(
+        purchase.Amendment,
         purchase.AmendmentLine,
         module='product_kit', type_='model', depends=['purchase_amendment'])
diff --git a/purchase.py b/purchase.py
index 1fcfcd7602..ba76c33c39 100644
--- a/purchase.py
+++ b/purchase.py
@@ -132,5 +132,17 @@ class HandleShipmentException(
     __name__ = 'purchase.handle.shipment.exception'
 
 
+class Amendment(metaclass=PoolMeta):
+    __name__ = 'purchase.amendment'
+
+    @classmethod
+    def _stock_moves(cls, line):
+        yield from super()._stock_moves(line)
+        for component in line.components:
+            for move in component.moves:
+                if move.state == 'draft':
+                    yield move
+
+
 class AmendmentLine(AmendmentLineMixin, metaclass=PoolMeta):
     __name__ = 'purchase.amendment.line'
diff --git a/sale.py b/sale.py
index 47a564ca17..823e1c1d5c 100644
--- a/sale.py
+++ b/sale.py
@@ -144,5 +144,17 @@ class HandleShipmentException(
     __name__ = 'sale.handle.shipment.exception'
 
 
+class Amendment(metaclass=PoolMeta):
+    __name__ = 'sale.amendment'
+
+    @classmethod
+    def _stock_moves(cls, line):
+        yield from super()._stock_moves(line)
+        for component in line.components:
+            for move in component.moves:
+                if move.state == 'draft':
+                    yield move
+
+
 class AmendmentLine(AmendmentLineMixin, metaclass=PoolMeta):
     __name__ = 'sale.amendment.line'