Normally the 'expired items notification' box will appear. If so, then click the Re-Search button in blue and checkout. And your trip should now show in your trip monitor as finalised.
If the 'expired items notification' box isn't showing, which sometimes happens, then;
- Click on the 'More' button in the top section of your trip cart.
- In the drop down options, select 'cancelled/expired quotes'.
- And from here, you can press Re-Search and proceed to checkout and your trip will now show in your trip monitor as finalised.
Here's a few screenshots to help.