If the delivery has been successfully completed and its guest tab has the Closed status, it can be reopened.

To reopen a closed delivery, select the desired guest tab from the list and choose the Undo closing command in the context menu.

A confirmation prompt will appear.

To undo the delivery closing (i.e. reopen the delivery), press OK. The guest tab will once again receive the En route status. If you do not want to undo the delivery closing, press Cancel.