Restore server objects on scene after change scene

I use High-level API and I have a SceneA and SceneB.

SceneA has a couple spawned objects. After a new connection, each client receives objects list and spawn it.

But when I change networkScene A to SceneB and go back I see no objects on SceneA that were be rendered before.

Is there any solution how to get back to SceneA and refresh scene objects according to network SceneA instance?

In the SceneA I use something like this:

Code (CSharp):

1.  
2.         public override void OnStartServer()
3.         {
4.             SpawnObjects();
5.         }
6.  

To change scenes I use

Code (CSharp):

1. SceneManager.LoadSceneAsync("SceneB");
2. SceneManager.LoadSceneAsync("SceneA");