2022-Aug-31 New Version of the Rule Sheet - Comair removed from the list of BA affiliated Airlines
According to diffchecker this is the only other change is to some booking codes on JL domestic flights
Comair is/was a BA subsidiary operating in southern Africa. I think it stopped flying during the pandemic and has yet to restart, perhaps it never will
It did fly JNB-MRU which would make possible a routing such as ...SYD-JNB-MRU-LGW...