ActionScript 3.0 :: Smooth Transition With TweenLite Does Not Work

I have a vector circle and what to do the following: I'd like to animate it with tweenlite so it looks like a shockwave of an explosion. At first it fades in (from 0 to .5) and gets scaled and when it reaches half of the total animation time it fades out but it still gets scaled (hope you know what I mean). Currently it looks horrible because I don't know how to get a smooth transition from part 1 to part 2 with TweenLite. My animation stops when reaching the end of part 1 and suddenly makes a jump to part 2.

Total time of animation: .75 sec
Total amount of scaling: 5

Code:
part 1 of 2:
TweenLite.to(blastwave, .375, {alpha:.5, transformAroundCenter:{scale:2.23},
onComplete:blastScaleFadeOut, onCompleteParams:[blastwave]});

part 2 of 2:
private function blastScaleFadeOut(object:DisplayObject, time:Number = .375, scaleVal:Number = 4.46) {
TweenLite.to(object, time, {alpha:0, transformAroundCenter:{scale:scaleVal},
onComplete:backgroundSprite.removeChild, onCompleteParams:[object]});
}