Originally Posted by
Viajero
It's an old rule. You can easily get back to MRU if you fly MRU-JNB-Asia... or MRU-JNB-Australia... The problem is for those wanting to fly MRU-Europe-Asia...
There is also one known case of BA in MRU making a mistake and allowing just what you want, but it was a mistake, so I would not count on them repeating the error.
That's ruined months of planning Viajero. I've seen enough of your posts on this forum to realise you're going to be right. The Oneworld Itinerary Planner doesn't seem to mind too much, BUT it never gets me comfortably back to MRU - I thought it was me.
Back to the drawing board.