Of the aircraft currently in Johannesburg, 2 are already converted cargo & the other is undergoing a conversion.
Currently in BOH are 3x A340-600 which haven’t moved in a while, 1x A340-500 and an already converted cargo A340-600.
Allegedly European have a number of ex Iberian A340-600s in Madrid too.
I can’t imagine any of the already converted/ undergoing freight conversion A340s will be reconfigured to passenger carrying.