diff --git a/modules/production/production.py b/modules/production/production.py
index 2f67798507..633d5749ef 100644
--- a/modules/production/production.py
+++ b/modules/production/production.py
@@ -692,15 +692,19 @@ class Production(ShipmentAssignMixin, Workflow, ModelSQL, ModelView):
         for production in productions:
             dates = production._get_move_planned_date()
             input_date, output_date = dates
-            inputs = [m for m in production.inputs
-                    if m.state not in {'done', 'cancelled'}]
+            inputs = [
+                m for m in production.inputs
+                if m.state not in {'done', 'cancelled'}
+                and m.planned_date != input_date]
             if inputs:
                 to_write.append(inputs)
                 to_write.append({
                         'planned_date': input_date,
                         })
-            outputs = [m for m in production.outputs
-                    if m.state not in {'done', 'cancelled'}]
+            outputs = [
+                m for m in production.outputs
+                if m.state not in {'done', 'cancelled'}
+                and m.planned_date != output_date]
             if outputs:
                 to_write.append(outputs)
                 to_write.append({