Fault with Last Delivery Email Note

Hi, I've spotted a fault with QBO. When you email a PO it shows this without having to go into the audit history:

Last Delivery: Sent by email to email_address at Jan 5 4:06 pm Greenwich Mean Time

However, if you change the PO's email address (perhaps you change the supplier) and press save, the email address shown in the "last delivery" notice changes even if you don't actually emailed the PO over to the new email address yet!

It's a silly oversight by QB's.

Cheers

Nick