Order of execution not respected? o.0

1

I don’t know where I went wrong with this code, but here it is:
main swf: stage empty, a function creates 1 enemy and 2 arrows from library and place them so that the two arrow clips touch the enemy clip.
inside Arrow clip: first frame stop();hit()
inside Enemy clip: stop()

inside Arrow class in an external .as file:

public function hit() {
			if (this.hitTestObject(arr)) {
				trace("trace1",this.name);
				arr.gotoAndPlay(2);
				trace("this should follow trace1",this.name);
				arr.doThat();
			}
		}

inside Enemy class:

public function doThat() {
			this.gotoAndPlay(3);
		}

main swf output:
trace1
trace1
this should follow trace1
this should follow trace1

output if I remove the “gotoAndPlay” command between the traces in Arrow:
trace1
this should follow trace1
trace1
this should follow trace1

why did the execution order change? or is it some logical flaw I didn’t understand?

thanks