Load Scene's Object Bundle After Scene(Level) has been Loaded

Hi, all

I made two AssetBundle files, one is scene and the other is scene's Object, like following fake code:

 BuildPipeline.PushAssetDependencies();
 {
    // generate fbx(prefab) AssetBundle
    BuildPipeline.BuildAssetBundle(...); 
 
    BuildPipeline.PushAssetDependencies();
    {
      // generate level's AssetBundle
      BuildPipeline.BuildStreamedSceneAssetBundle(...);
    }
    BuildPipeline.PopAssetDependencies();
 }
 BuildPipeline.PopAssetDependencies();

so that the scene AssetBundle file is much smaller to download and load easier, I load scene AssetBundle before scene's objects , like following fake code:

 IEnumerator LoadFunction() {
    WWW www = new WWW(...); // download the scene first
    yield return www; 
    Application.LoadLevelAdditive("scene");

    ... // many other operation later
    
    if(canVisible){
        www = new WWW(...); // download the scene's object at some condition
        yield return www;

        www.assetBundle.LoadAsync(...);
    }
 }

Problem is the scene's object is display abnormally, it maybe invisible, if I load the scene's object first (before scene loading), it's right.

My method can make scene (Level) load quickly and download scene's objects selectively.

Has any method to refresh current loaded scene(Level) in order to retrieve/reload asset which download/load after scene(Level) has been loaded?

Thanks a lot!