diff --git a/models/stock_inventory_backdate.py b/models/stock_inventory_backdate.py
index 400415a..d23f9e2 100755
--- a/models/stock_inventory_backdate.py
+++ b/models/stock_inventory_backdate.py
@@ -298,7 +298,27 @@ class StockInventoryBackdate(models.Model):
             )
         """, (backdate.date(), move_ids))
 
-        # 5. Clear cache to reflect changes
+        # 5. Update account move line dates
+        self.env.cr.execute("""
+            UPDATE account_move_line 
+            SET date = %s 
+            WHERE move_id IN (
+                SELECT account_move_id FROM stock_valuation_layer WHERE stock_move_id IN %s
+            )
+        """, (backdate.date(), move_ids))
+
+        # 6. Update account analytic line dates
+        self.env.cr.execute("""
+            UPDATE account_analytic_line 
+            SET date = %s 
+            WHERE move_line_id IN (
+                SELECT id FROM account_move_line WHERE move_id IN (
+                    SELECT account_move_id FROM stock_valuation_layer WHERE stock_move_id IN %s
+                )
+            )
+        """, (backdate.date(), move_ids))
+
+        # 7. Clear cache to reflect changes
         self.env.invalidate_all()
 
     def action_cancel(self):