Thanks, getting there!

Next question. I'm looking for CW / Business upgrade availability on BA.

The previous OW / BA option made sense and seemed to show what was available, but the OW only / Qantas option doesn't.

For the 8th April LHR to LAX on BA269 it shows FS- YS+. Now, what about CW / Business? I'm assuming it's not FS as that's first? Also if you try to book a BA avios booking in economy there's nothing available, yet wouldn't YS+ mean there should be? Selected 1 seat by the way.

Lastly can I upgrade from Platinum to Diamond? Only went for Platinum as it appeared to offer the same level of information for BA when it seems that it doesn't.