Your ticketed allowance applies, and the BA baggage website is quite clear regarding other carrier allowances. You have just confused the issue with wanting the extra allowance that BA provides to oneworld Sapphire, and that Qantas does not officially give additional allowance to non-Qantas oneworld Sapphires.
Actually, I would be perfectly happy with 2 X 23KG. The BA CS person said "Well I see on the booking that QF only allows 1 X 23KG so you will need to check with them".
Now if I can get 2 X 32KG as sapphire, great. But that is not clear either as the CS person said they "might" allow it, but she is not sure.
When I spoke with QF they actually said "We will be perfectly happy with 2 X 23KG for all legs as you are sapphire" (including the QF flight to SIN on the way back where the MSC does not apply, or the QF one does, which says 1 X 23 on by booking) however the booking says I am only owed 1 X 23. So if I read the website carefully it says one thing, BA CS says another and QF CS say a third thing and QF has a fourth policy which is not documented.
I really just want it to be clear. If its 1 X 23kg, I will pay the extra at checkin for the additional bag, no problem. I would just love to know what it actually is....
So back to the OP's problem.....it really is not clear...
