In the screenshot above, and in countless blog posts on how to cancel a BA Avios award online, it shows a "calculation" of refund. When I go into my booking and select the cancellation option, I don't get any of that. I get a form that asks for my name, email, postal address, phone number etc.. and says:

• Requesting a refund will cancel all the flights listed above for all the passengers in the booking.
• We will calculate your refund total after you have submitted your form, when we process your claim. The refund amount will be based on our terms and conditions and is final and non-negotiable. Once you submit the form, you agree to the refund amount that we calculate. Under normal circumstances your refund will be processed within 7 working days of form submission, but please be aware that it may take up to two billing cycles before appearing on your credit card statement.

How do I get the page that shows the refund amount? If if matters, this is a partner operated flight (fiji airways, YVR-NAN-SYD)