If you issue a refund or partial refund, your customers might ask you to send them an updated receipt (i.e. order confirmation, in Brandibble speak).
To do this, follow these steps:
Go to Orders > Order Management and select the location where the order was placed
Assuming the order has already been confirmed, click on Old Orders
Find the order and click on Resend Email
You can edit the text that will be sent in the email if you'd like
Click on Resend Email Confirmation