Can someone help me please?

Somehow the Reality_scene data does not get loaded when I merge a scene into an existing scene.

Here is what happens:

I save  scene-1 in DUF format.

I load this scene as 'new scene' and everthing is fine, reality data present as it should be.

Now I create another scene and merge scene-1 into it.

Now the Reality_data of scene-1 isn't loaded at all, only the reality_data of my first scene is present.

What am I doing wrong here?