diff --git a/script/odoo/migration/check_cow_views.py b/script/odoo/migration/check_cow_views.py
index 07321a0..d01d2fa 100755
--- a/script/odoo/migration/check_cow_views.py
+++ b/script/odoo/migration/check_cow_views.py
@@ -313,7 +313,15 @@ def main():
                 f" : {mode} -> {target_mode} ({reason})"
             )
         print(
-            "   Arbitrate BEFORE launching the migration. To neutralize a copy,"
+            "   The migration will offer to neutralize them at the bump, and"
+            " shows what each copy holds before you answer. To do it now:"
+            "\n     ./script/odoo/migration/cow_drift.py -d DB -t odooXX.0"
+            "   (read what they hold)"
+            "\n     ./script/odoo/migration/neutralize_cow_views.py -d DB"
+            " -t odooXX.0 --apply   (reversible with --restore)"
+        )
+        print(
+            "   Or by hand. To neutralize a copy,"
             " rename its key (UPDATE ir_ui_view SET key='zz_cow_archive.'||key,"
             " active=false): an unmatched key is never paired with the module"
             " view, so the copy never receives the new inherit_id. Setting"
diff --git a/script/todo/todo_i18n.py b/script/todo/todo_i18n.py
index ef08606..8e83355 100644
--- a/script/todo/todo_i18n.py
+++ b/script/todo/todo_i18n.py
@@ -3872,6 +3872,33 @@ TRANSLATIONS = {
         "fr": "faite plus tôt, avant la neutralisation",
         "en": "done early, before the neutralization",
     },
+    "compare each website copy with the module view it shadows": {
+        "fr": "comparer chaque copie de site web à la vue de module qu'elle"
+        " masque",
+        "en": "compare each website copy with the module view it shadows",
+    },
+    "Compare the website copies with the view they shadow": {
+        "fr": "🪞 Comparer les copies de site web à la vue qu'elles masquent",
+        "en": "🪞 Compare the website copies with the view they shadow",
+    },
+    "website copies compared with their module view,": {
+        "fr": "copies de site web comparées à leur vue de module,",
+        "en": "website copies compared with their module view,",
+    },
+    "differ.": {"fr": "diffèrent.", "en": "differ."},
+    "Nothing to decide yet": {
+        "fr": "Rien à décider pour l'instant",
+        "en": "Nothing to decide yet",
+    },
+    "the migration will offer to neutralize these copies": {
+        "fr": "la migration proposera de neutraliser ces copies",
+        "en": "the migration will offer to neutralize these copies",
+    },
+    "at the version bump itself, showing what each one holds.": {
+        "fr": "au moment du palier lui-même, en montrant ce que chacune"
+        " contient.",
+        "en": "at the version bump itself, showing what each one holds.",
+    },
     # --- script/analyse : vues personnalisées ---
     "Customised views": {
         "fr": "Vues personnalisées",
diff --git a/script/todo/todo_upgrade.py b/script/todo/todo_upgrade.py
index c75a592..0daace6 100755
--- a/script/todo/todo_upgrade.py
+++ b/script/todo/todo_upgrade.py
@@ -1457,11 +1457,22 @@ class TodoUpgrade:
         # -- before hours of migration -- leaves time to arbitrate.
         # Only the next bump can be predicted: the modes in database describe
         # the current version.
-        self.todo_upgrade_execute(
+        status, cmd_executed, output = self.todo_upgrade_execute(
             f"{PYTHON_BIN} ./script/odoo/migration/check_cow_views.py"
             f" -d {database_name} -t odoo{start_version + 1}.0",
+            get_output=True,
             wait_at_error=False,
         )
+        # Cet avertissement n'est qu'un avertissement, et rien ne le disait :
+        # il annonce un problème, propose d'arbitrer, et aucune question ne
+        # suit. On en conclut que la question est passée — alors qu'elle vient
+        # au moment du palier, des dizaines de minutes plus tard.
+        if output and "will break when moving to" in "\n".join(output):
+            print(
+                f"ℹ -> {t('Nothing to decide yet')} :"
+                f" {t('the migration will offer to neutralize these copies')}"
+                f" {t('at the version bump itself, showing what each one holds.')}"
+            )
 
         msg = "3 - Clean up database before data migration"
         print(f"🔷 {msg}")