Thank you all for your input.
I will be happy when One World goes to on line booking for RTW.
Every airline seems to interpret rules according to their own whims.
I failed to state in my first post that I am dong the Platinum challenge, thus the reason for the want of an AA code share on CX metal.
I may take Dr. HFH advice and use the AA RTW desk in Cape Town next time.
I am working on another AONE4 with CX Canada now but I am not reserved or ticketed with them yet.