Any harm to switching from auto mode 'D' to manual mode and back while driving?

Lee123

I'm lazy and drive around in the 'D' automatic mode quite a bit when in traffic, but frequently like to switch to manual mode at a light or when there's not much traffic and then will switch back to automatic mode later without stopping. This doesn't seem to have any adverse effect on the car, but I'm sure I read something saying to only switch modes when not moving. That could well have been from some other car I was considering since it's possible to download owners manuals and I did that for two or three other cars that I was considering and one was a used SL55 AMG that had an automatic with manual mode. There's not a word in the 370z owner's manual saying not to do this, but I wanted to check and see if I just missed something so I don't damage my almost new car.