The mixture adaptation was supposed to be reset. At least I was told that it would be reset because the shop was going to run diagnostic again to see if any additional codes were thrown.
In the even that the adaptations were not reset, how long will it take for the car to relearn with normal driving?

I think duxthe1 is right about the older car only having 2 catalytic converters... Had to have them replaced in a 600 that I sold not long ago and the cats were only sold as "Left" and "Right". But wow, 8 cats... a little off subject, but what is the benefit of having 8 cats? I was crying when I had to replace the ones in my other car because it was a dealer only part @ $1500; but, I decided to go with aftermarket ones that was half the cost for each... Can't imagine have 8 of them that could possiblly get clogged.