Okay so I accidentally did it last night (seriously, it was an accident). I was sitting at a red light with a friend and I put it into neutral and revved up to about 1700 and then I saw the light turned green so I let off and through it into D4 (there were people behind me, so I didn't want to piss them off). It didn't drop down to idle before I put it into D4 so it jumped a little.
Thanks for the info, I definitely won't be doing it (purposefully)!