Whose name is on the invoice?
In your company's name. Credit notes follow the same path.
The invoice is in your company's name, never in the name of the employee who travelled. It lists the detail of the service, and it is the document you hand to your accountant.
If a trip is cancelled or its price changes, the credit note follows the same path and carries the same name.
Your invoices and credit notes stay available in your account.