diff --git a/fusion_helpdesk_central/__manifest__.py b/fusion_helpdesk_central/__manifest__.py
index 5ac063e2..f116394a 100644
--- a/fusion_helpdesk_central/__manifest__.py
+++ b/fusion_helpdesk_central/__manifest__.py
@@ -3,7 +3,7 @@
 # License OPL-1
 {
     'name': 'Fusion Helpdesk Central — Client API Keys',
-    'version': '19.0.2.3.2',
+    'version': '19.0.2.3.3',
     'category': 'Productivity',
     'summary': 'Admin UI on the central Odoo for issuing per-client API '
                'keys used by fusion_helpdesk client deployments.',
diff --git a/fusion_helpdesk_central/models/engagement_wizard.py b/fusion_helpdesk_central/models/engagement_wizard.py
index d6b03d4a..c4e3f6af 100644
--- a/fusion_helpdesk_central/models/engagement_wizard.py
+++ b/fusion_helpdesk_central/models/engagement_wizard.py
@@ -117,10 +117,23 @@ class FusionHelpdeskEngagementWizard(models.TransientModel):
     def default_get(self, fields_list):
         vals = super().default_get(fields_list)
         ctx = self.env.context or {}
-        ticket_id = ctx.get('default_ticket_id') or ctx.get('active_id')
-        ticket_ids = ctx.get('default_ticket_ids') or ctx.get('active_ids') or []
         active_model = ctx.get('active_model')
 
+        # ONLY trust active_id/active_ids when active_model says they're
+        # helpdesk tickets. Without this guard, opening the wizard via any
+        # act_window that left an unrelated active_id in context (e.g. a
+        # button on the wizard returning a re-open action whose res_id is
+        # the wizard's OWN id) silently reinterprets that id as a ticket
+        # — and `_default_get_single` then raises "Ticket N no longer
+        # exists" against the wizard's own id. The explicit
+        # `default_ticket_id[s]` context keys are still the strong signal.
+        ticket_id = ctx.get('default_ticket_id')
+        if not ticket_id and active_model == 'helpdesk.ticket':
+            ticket_id = ctx.get('active_id')
+        ticket_ids = ctx.get('default_ticket_ids') or []
+        if not ticket_ids and active_model == 'helpdesk.ticket':
+            ticket_ids = ctx.get('active_ids') or []
+
         # Disambiguate single vs bulk by what the caller actually selected.
         # The list-view server action passes active_ids; the form button
         # passes a single active_id via a deliberate context key.
@@ -318,8 +331,12 @@ class FusionHelpdeskEngagementWizard(models.TransientModel):
     # ------------------------------------------------------------------
     def action_generate_summary(self):
         """Single mode: fire OpenAI with the current findings, drop the
-        result into ai_summary. Returns an action to keep the wizard open
-        (replaces the current view instead of closing it).
+        result into ai_summary. Returns True (no navigation) so the
+        wizard stays open and the form view re-renders with the new
+        summary populated. DO NOT return an `act_window` with
+        `res_id=self.id` here — that puts the WIZARD's id into the new
+        action's `active_id`, which then collides with default_get's
+        ticket lookup and raises "Ticket <wizard_id> no longer exists".
         """
         self.ensure_one()
         if self.mode != 'single' or not self.ticket_id:
@@ -332,18 +349,15 @@ class FusionHelpdeskEngagementWizard(models.TransientModel):
         )
         self.ai_summary = summary
         self.ai_unavailable = not bool(summary)
-        return {
-            'type': 'ir.actions.act_window',
-            'res_model': 'fusion.helpdesk.engagement.wizard',
-            'res_id': self.id,
-            'view_mode': 'form',
-            'target': 'new',
-        }
+        return True
 
     def action_generate_all_summaries(self):
         """Bulk mode: fire OpenAI per-ticket in parallel using each line's
         own findings. Lines that already have a non-empty ai_summary get
         regenerated too (the user clicked the button — they meant it).
+
+        Returns True for the same reason as action_generate_summary:
+        keep the dialog open; don't re-navigate.
         """
         self.ensure_one()
         if self.mode != 'bulk' or not self.line_ids:
@@ -359,13 +373,7 @@ class FusionHelpdeskEngagementWizard(models.TransientModel):
             line.ai_summary = results.get(line.ticket_id.id, '')
         any_ok = any(results.values())
         self.ai_unavailable = not any_ok
-        return {
-            'type': 'ir.actions.act_window',
-            'res_model': 'fusion.helpdesk.engagement.wizard',
-            'res_id': self.id,
-            'view_mode': 'form',
-            'target': 'new',
-        }
+        return True
 
     # ------------------------------------------------------------------
     # Send: write engagement state + queue mail