Load & Unload Movie Issue

Question

Hi Guys:
Have 2 unable solve issues, would be much appreciated if anyone could help.
// ISSUE 1 //
I am experiencing an issue with Load & Unload Movie.  What happen is that I am trying to load an external SWF into a movie clip call movieContainer in my main website.  This external SWF file has timeline that perform a animation when it's loaded into the movieContainer.
I can load and unload the movie with no problem...the issue is that after I unload the SWF and then at any point of the movie on the main website I click to load the SWF back to the stage.....the timeframe of the SWF file stay at where it get left off(when it's unloaded).  I am trying to make it play start all over again.
I try the movieContainer.content.gotoAndPlay(1); but it doesn't do anything. Any idea how I could make this work?
Here is my code:
var content:Loader = new Loader();
content.load(new URLRequest("externalSwf/content.swf"));
loadMovieButton.addEventListener(MouseEvent.CLICK, loadMovieButtonClicked);
function loadMovieButtonClicked(e:MouseEvent):void{
    movieContainer.addChild(content);
// ISSUE 2 //
In my external SWF file, I have create a loading loader at the 1st frame.  But it doesn't play all the time when I testing on the server.  It works just fine when I test locally with TEST MOVIE.  Not only it doesn't play all the time.....it suppose to play from 2nd frame of the movie after the loading is finished (I have a short animation play between frame 2 - frame 20)  Instead of playing from frame 2 to frame 20, the animation just jump straight to frame 20...which mean the user won't see the animation between frame 2 - frame 20.
import flash.events.ProgressEvent;
function update(e:ProgressEvent):void
var percent:Number = Math.floor( (e.bytesLoaded*100)/e.bytesTotal );
if(preloaderMC is MovieClip){
preloaderMC.gotoAndStop(percent);
//preload_txt.text = String(percent);
if(percent == 100){
gotoAndPlay(2);
loaderInfo.addEventListener(ProgressEvent.PROGRESS, update);
// Extra test for IE
var percent:Number = Math.floor( (this.loaderInfo.bytesLoaded*100)/this.loaderInfo.bytesTotal );
if(percent == 100){
nextFrame();
stop();
Many Thanks!

Answer 1

Thanks for the reply, the code I use to load the external SWF is:
The button is within a movieClip: commercialScrollBar_mc
The button instance name is: stackPancakeBar
The external SWF get to load into a movieClip container call: projectDetailsContainer_mc
var ldr:Loader = new Loader();
ldr.load(new URLRequest("projectsCommercial/stackPancakeBar.swf"));
commercialScrollBar_mc.stackPancakeBar.addEventListener(MouseEvent.CLICK, stackPancakeBarClicked);
function stackPancakeBarClicked(e:MouseEvent):void{
    MovieClip(ldr.content).gotoAndPlay(1);
    projectDetailsContainer_mc.addChild(ldr);
I was thinking does it has anything to do with the UNLOAD script I have on the external SWF file? Below are the code for removing the child.
back_btn.addEventListener(MouseEvent.CLICK, removeProjectDetails);
function removeProjectDetails(e:MouseEvent):void{
    this.parent.parent.removeChild(this.parent);
Thanks Heaps, by the way, do you have any idea why the loading sequence doesn't get to play every time?  Or perhape the file size is too small?