diff --git a/loko/inspections/locale/en/LC_MESSAGES/django.mo b/loko/inspections/locale/en/LC_MESSAGES/django.mo
index dfd3154..02ac4aa 100644
Binary files a/loko/inspections/locale/en/LC_MESSAGES/django.mo and b/loko/inspections/locale/en/LC_MESSAGES/django.mo differ
diff --git a/loko/inspections/locale/en/LC_MESSAGES/django.po b/loko/inspections/locale/en/LC_MESSAGES/django.po
index f9b5e8a..2d0ebb8 100644
--- a/loko/inspections/locale/en/LC_MESSAGES/django.po
+++ b/loko/inspections/locale/en/LC_MESSAGES/django.po
@@ -1965,6 +1965,11 @@ msgstr ""
 "Please answer each of the 4 visual checks of the Hot Box repair (Flatness, "
 "Joints, Cracking, Drainage)."
 
+msgid ""
+"Contrôles visuels non encore renseignés (inspection planifiée ou en attente "
+"d'évaluation)."
+msgstr "Visual checks not yet filled in (scheduled or pending evaluation)."
+
 #~ msgid "Renforcement de l'entretien préventif"
 #~ msgstr "Reinforcement of preventive maintenance"
 
diff --git a/loko/inspections/locale/fr/LC_MESSAGES/django.mo b/loko/inspections/locale/fr/LC_MESSAGES/django.mo
index 8b6f41f..9c33eb7 100644
Binary files a/loko/inspections/locale/fr/LC_MESSAGES/django.mo and b/loko/inspections/locale/fr/LC_MESSAGES/django.mo differ
diff --git a/loko/inspections/locale/fr/LC_MESSAGES/django.po b/loko/inspections/locale/fr/LC_MESSAGES/django.po
index 8d4f846..3b1c422 100644
--- a/loko/inspections/locale/fr/LC_MESSAGES/django.po
+++ b/loko/inspections/locale/fr/LC_MESSAGES/django.po
@@ -1973,6 +1973,13 @@ msgstr ""
 "Veuillez répondre à chacun des 4 contrôles visuels de la réparation Hot Box "
 "(Planéité, Joints, Fissuration, Évacuation des eaux)."
 
+msgid ""
+"Contrôles visuels non encore renseignés (inspection planifiée ou en attente "
+"d'évaluation)."
+msgstr ""
+"Contrôles visuels non encore renseignés (inspection planifiée ou en attente "
+"d'évaluation)."
+
 #~ msgid "Renforcement de l'entretien préventif"
 #~ msgstr "Renforcement de l’entretien préventif"
 
diff --git a/loko/inspections/locale/nl/LC_MESSAGES/django.mo b/loko/inspections/locale/nl/LC_MESSAGES/django.mo
index 611b7f3..febaab2 100644
Binary files a/loko/inspections/locale/nl/LC_MESSAGES/django.mo and b/loko/inspections/locale/nl/LC_MESSAGES/django.mo differ
diff --git a/loko/inspections/locale/nl/LC_MESSAGES/django.po b/loko/inspections/locale/nl/LC_MESSAGES/django.po
index ba155cb..1f3d363 100644
--- a/loko/inspections/locale/nl/LC_MESSAGES/django.po
+++ b/loko/inspections/locale/nl/LC_MESSAGES/django.po
@@ -1964,6 +1964,13 @@ msgstr ""
 "Gelieve elk van de 4 visuele controles van de Hot Box-herstelling te "
 "beantwoorden (Vlakheid, Voegen, Scheurvorming, Afwatering)."
 
+msgid ""
+"Contrôles visuels non encore renseignés (inspection planifiée ou en attente "
+"d'évaluation)."
+msgstr ""
+"Visuele controles nog niet ingevuld (geplande inspectie of in afwachting van"
+" evaluatie)."
+
 #~ msgid "Renforcement de l'entretien préventif"
 #~ msgstr "Versterking van preventief onderhoud"
 
diff --git a/loko/inspections/migrations/0013_promote_existing_hotbox_inspections.py b/loko/inspections/migrations/0013_promote_existing_hotbox_inspections.py
new file mode 100644
index 0000000..54f9164
--- /dev/null
+++ b/loko/inspections/migrations/0013_promote_existing_hotbox_inspections.py
@@ -0,0 +1,35 @@
+from django.db import migrations, models
+
+
+def promote_existing_hotbox_inspections(apps, schema_editor):
+    Inspection = apps.get_model('inspections', 'Inspection')
+    HotBoxInspection = apps.get_model('inspections', 'HotBoxInspection')
+    db_alias = schema_editor.connection.alias
+
+    existing_hb_ids = set(HotBoxInspection.objects.using(db_alias).values_list('inspection_ptr_id', flat=True))
+
+    inspections_to_promote = Inspection.objects.using(db_alias).filter(
+        models.Q(checked_intervention__sub_type__code='hotbox') |
+        models.Q(mission_intervention__sub_type__code='hotbox')
+    ).exclude(id__in=existing_hb_ids)
+
+    for insp in inspections_to_promote:
+        hb = HotBoxInspection(inspection_ptr=insp)
+        for f in insp._meta.fields:
+            setattr(hb, f.attname, getattr(insp, f.attname))
+        hb.save_base(raw=True, using=db_alias)
+
+
+def reverse_func(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('inspections', '0012_alter_hotboxinspection_water_drainage'),
+    ]
+
+    operations = [
+        migrations.RunPython(promote_existing_hotbox_inspections, reverse_func),
+    ]
diff --git a/loko/inspections/models.py b/loko/inspections/models.py
index dafc01a..c085779 100644
--- a/loko/inspections/models.py
+++ b/loko/inspections/models.py
@@ -598,7 +598,10 @@ class Inspection(models.Model):
             return self.hotboxinspection
         if self.is_hotbox_related and self.pk:
             try:
-                hb, _ = HotBoxInspection.objects.get_or_create(inspection_ptr=self)
+                hb = HotBoxInspection(inspection_ptr=self)
+                for f in self._meta.fields:
+                    setattr(hb, f.attname, getattr(self, f.attname))
+                hb.save_base(raw=True)
                 return hb
             except Exception:
                 pass
diff --git a/loko/inspections/templates/inspections/components/asset_details/_hotbox.html b/loko/inspections/templates/inspections/components/asset_details/_hotbox.html
index a1cb635..93d9fd3 100644
--- a/loko/inspections/templates/inspections/components/asset_details/_hotbox.html
+++ b/loko/inspections/templates/inspections/components/asset_details/_hotbox.html
@@ -8,6 +8,12 @@
     </h6>
     
     <ul class="list-group list-group-flush bg-transparent">
+        {% if not leaf.joint_level and not leaf.joint_sealing and not leaf.cracking and not leaf.water_drainage %}
+        <li class="list-group-item bg-transparent text-muted small fst-italic px-0 py-2">
+            <i class="bi bi-hourglass-split me-1 text-secondary"></i>{% translate "Contrôles visuels non encore renseignés (inspection planifiée ou en attente d'évaluation)." %}
+        </li>
+        {% endif %}
+
         <!-- 1. Planéité -->
         {% if leaf.joint_level %}
         <li class="list-group-item bg-transparent d-flex justify-content-between align-items-center px-0 py-2.5 border-bottom-0">
diff --git a/loko/inspections/tests.py b/loko/inspections/tests.py
index 7645d02..78004db 100644
--- a/loko/inspections/tests.py
+++ b/loko/inspections/tests.py
@@ -2018,7 +2018,63 @@ class PostInterventionDurabilityInspectionTestCase(TestCase):
         insp = schedule_post_intervention_inspection(intervention)
         self.assertIsNotNone(insp)
         self.assertIsInstance(insp.detailed_inspection, HotBoxInspection)
-        self.assertTrue(insp.is_hotbox_related)
+
+    def test_existing_base_inspection_promotion_and_update(self):
+        """Vérifie qu'une inspection existante créée comme base Inspection pour un Hot Box est bien promue en HotBoxInspection et que ses choix sont sauvegardés."""
+        self.client.force_login(self.user)
+        intervention = self._create_finished_intervention(sub_type=self.hotbox_subtype)
+        interv_ct = ContentType.objects.get_for_model(Intervention)
+
+        # Création directe comme base Inspection (simulation d'une inspection créée avant la migration)
+        base_insp = Inspection.objects.create(
+            asset_content_type=interv_ct,
+            asset_object_id=intervention.pk,
+            nature='post_intervention',
+            checked_intervention=intervention,
+            status='scheduled',
+            result_status='pending',
+        )
+
+        # 1. Avant évaluation : get_inspection_detail_api renvoie le message d'attente
+        detail_url = reverse('inspections:get_inspection_detail_api', kwargs={'inspection_id': base_insp.id})
+        resp_detail = self.client.get(detail_url, HTTP_ACCEPT_LANGUAGE='fr')
+        self.assertEqual(resp_detail.status_code, 200)
+        detail_data = resp_detail.json()
+        self.assertTrue(detail_data.get('is_hotbox'))
+        self.assertIn("non encore renseignés", detail_data.get('details_html', ''))
+
+        # 2. Mise à jour via update_inspection_api (sauvegarde des 4 critères)
+        update_url = reverse('inspections:update_inspection_api', kwargs={'inspection_id': base_insp.id})
+        update_data = {
+            'status': 'completed',
+            'result_status': 'compliant',
+            'joint_level': 'flush',
+            'joint_sealing': 'good',
+            'cracking': 'none',
+            'water_drainage': 'not_checked',
+            'notes': 'Test mise à jour inspection Hot Box existante',
+        }
+        resp_update = self.client.post(update_url, update_data)
+        self.assertEqual(resp_update.status_code, 200)
+        self.assertTrue(resp_update.json()['success'])
+
+        # 3. Vérification que l'inspection est maintenant bien un HotBoxInspection avec ses choix
+        base_insp.refresh_from_db()
+        leaf = base_insp.detailed_inspection
+        self.assertIsInstance(leaf, HotBoxInspection)
+        self.assertEqual(leaf.joint_level, 'flush')
+        self.assertEqual(leaf.joint_sealing, 'good')
+        self.assertEqual(leaf.cracking, 'none')
+        self.assertEqual(leaf.water_drainage, 'not_checked')
+
+        # 4. Consultation du détail : les badges et choix sont bien présents
+        resp_detail_after = self.client.get(detail_url, HTTP_ACCEPT_LANGUAGE='fr')
+        detail_data_after = resp_detail_after.json()
+        self.assertEqual(detail_data_after['joint_level'], 'flush')
+        self.assertEqual(detail_data_after['water_drainage'], 'not_checked')
+        self.assertIn("Bien à niveau / Arasé", detail_data_after['details_html'])
+        self.assertIn("Non vérifié", detail_data_after['details_html'])
+        self.assertTrue(base_insp.is_hotbox_related)
 
 
 
diff --git a/loko/inspections/views.py b/loko/inspections/views.py
index 678bc72..c023b4e 100644
--- a/loko/inspections/views.py
+++ b/loko/inspections/views.py
@@ -987,6 +987,16 @@ def update_inspection_api(request, inspection_id):
     inspection_obj = get_object_or_404(Inspection, pk=inspection_id)
     inspection = inspection_obj.detailed_inspection
 
+    if not isinstance(inspection, HotBoxInspection) and (getattr(inspection, 'is_hotbox_related', False) or 'joint_level' in request.POST):
+        try:
+            hb = HotBoxInspection(inspection_ptr=inspection)
+            for f in inspection._meta.fields:
+                setattr(hb, f.attname, getattr(inspection, f.attname))
+            hb.save_base(raw=True)
+            inspection = hb
+        except Exception:
+            pass
+
     if not inspection.can_edit(request.user):
         return JsonResponse({
             'success': False,