Autotune has a function within it's graphical mode called CORRECT in which you have to push Play in the seqeuncer being used...
But in the BOUNCE function of Logic, you must do all editing prior to the bounce so once you have begun the process - you cannot make any chnages or push any buttons...
Therefore the procedrue of the 2 button action of this Autotune function does not allow you to use this within the BOUNCE function of Logic