Sorry Ramp Tramp,
the world may have gone off the B747-Combi, but KLM, Lufty, KAL, EVA et al found them very, very profitable.
Trust me, I'm an accountant...
But yes, after the SAA incident we had to reconfigure everything back to 6/7 MDP, there were a lot of tweaks in the loading as access to all pallets had to be made possible in-flight, change to some fire suppression stuff, the forward G-net also had to incorporate a fireshield, and some other shielding had to be added/improved. and ((from memory)) at least 2 flight attendants on every flight had to be trained in firefighting ((not sure if this was continued)) extra portable firefighting eqpt also carried.
Main annoyance was that the original 12MDP aircraft were hauling around 'heavier' cargo floor which couldn't actually be used; On the -300 (new builds) and the -400 (all new) only the 6/7 MDP area had the cargo floor
p.s. this is all from memory, so is quite possibly completely & utterly rong