diff --git a/src/Controller/PartController.php b/src/Controller/PartController.php
index 051053e5..53fc01eb 100644
--- a/src/Controller/PartController.php
+++ b/src/Controller/PartController.php
@@ -243,6 +243,8 @@ class PartController extends AbstractController
         //Save the old name of the target part for the template
         $target_name = $target->getName();
 
+        $this->addFlash('notice', t('part.merge.flash.please_review'));
+
         $merged = $partMerger->merge($target, $other);
         return $this->renderPartForm('merge', $request, $merged, [], [
             'tname_before' => $target_name,
@@ -265,6 +267,8 @@ class PartController extends AbstractController
 
         $part = $partMerger->merge($part, $provider_part);
 
+        $this->addFlash('notice', t('part.merge.flash.please_review'));
+
         return $this->renderPartForm('update_from_ip', $request, $part, [
             'info_provider_dto' => $dto,
         ], [
diff --git a/translations/messages.en.xlf b/translations/messages.en.xlf
index a354d626..983aa340 100644
--- a/translations/messages.en.xlf
+++ b/translations/messages.en.xlf
@@ -12035,5 +12035,11 @@ Please note, that you can not impersonate a disabled user. If you try you will g
         <target>Update existing part from info provider</target>
       </segment>
     </unit>
+    <unit id="lkIVIWr" name="part.merge.flash.please_review">
+      <segment>
+        <source>part.merge.flash.please_review</source>
+        <target>Data not saved yet. Review the changes and click save to persist the new data.</target>
+      </segment>
+    </unit>
   </file>
 </xliff>