diff --git a/models/pos_session.py b/models/pos_session.py
index f92eeb6..ce52bb1 100644
--- a/models/pos_session.py
+++ b/models/pos_session.py
@@ -40,7 +40,7 @@ class PosSession(models.Model):
         
         # Find draft orders belonging to closed sessions of the same POS
         pending_orders = self.env['pos.order'].search([
-            ('session_id.config_id', '=', self.config_id.id),
+            ('session_id.config_id', 'in', self.mapped('config_id').ids),
             ('session_id.state', '=', 'closed'),
             ('state', '=', 'draft')
         ])