diff --git a/content/receivers.py b/content/receivers.py
index 3d4b738..6694e1a 100644
--- a/content/receivers.py
+++ b/content/receivers.py
@@ -6,15 +6,17 @@ from .services import touch_node_progress_on_answer, update_node_progress_on_les
 
 
 @receiver(post_save, sender=UserAnswer, dispatch_uid='content_touch_node_progress_on_answer')
-def _on_user_answer_created(sender, instance, created, **kwargs):
-    if not created:
+def _on_user_answer_created(sender, instance, created, raw=False, **kwargs):
+    # raw=True: loaddata/dumpdata-انتقال؛ ردیفِ NodeProgress خودش در فایل است و ساختنش اینجا تکراری می‌شد.
+    if raw or not created:
         return
     touch_node_progress_on_answer(instance.user_id, instance.question)
 
 
 @receiver(post_save, sender=UserLessonCompletion, dispatch_uid='content_update_node_progress_on_completion')
-def _on_lesson_completion_created(sender, instance, created, **kwargs):
-    if not created:
+def _on_lesson_completion_created(sender, instance, created, raw=False, **kwargs):
+    # raw=True: loaddata/dumpdata-انتقال؛ ردیفِ NodeProgress خودش در فایل است و ساختنش اینجا تکراری می‌شد.
+    if raw or not created:
         return
     update_node_progress_on_lesson_completion(instance.user_id, instance.lesson)
 
diff --git a/content/tests_loaddata_raw.py b/content/tests_loaddata_raw.py
new file mode 100644
index 0000000..15fa41b
--- /dev/null
+++ b/content/tests_loaddata_raw.py
@@ -0,0 +1,18 @@
+"""loaddata (انتقال به Postgres) نباید از روی سیگنال NodeProgress بسازد: خودِ ردیف در فایل است."""
+from django.db.models.signals import post_save
+from django.test import TestCase
+
+from content.models import Choice, Grade, Lesson, Node, NodeProgress, Question, Unit, UserAnswer
+
+
+class RawSaveTests(TestCase):
+    def test_raw_user_answer_save_creates_no_node_progress(self):
+        grade = Grade.objects.create(title='g', number=99)
+        unit = Unit.objects.create(grade=grade, title='u', order=1)
+        node = Node.objects.create(unit=unit, title='n', order=1)
+        lesson = Lesson.objects.create(node=node, title='l')
+        q = Question.objects.create(lesson=lesson, type='multiple_choice', prompt='p')
+        c = Choice.objects.create(question=q, value='a', is_correct=True)
+        answer = UserAnswer(user_id=1, question=q, choice=c, correct=True)
+        post_save.send(UserAnswer, instance=answer, created=True, raw=True)
+        self.assertEqual(NodeProgress.objects.count(), 0)