diff --git a/modules/purchase_trade/dashboard.py b/modules/purchase_trade/dashboard.py
index d79bd81..1a8b9e2 100755
--- a/modules/purchase_trade/dashboard.py
+++ b/modules/purchase_trade/dashboard.py
@@ -717,6 +717,7 @@ class BotWizard(Wizard):
                                 l.lot_quantity = l.lot_qt
                                 l.lot_gross_quantity = l.lot_qt
                                 l.lot_premium = Decimal(0)
+                                l.lot_chunk_key = None
                                 lot_id = LotQt.add_physical_lots(lqt,[l])
                                 d.action_return = 'lot.lot,' + str(lot_id) + ',' + str(lot_id)
                                 Dashboard.save([d])