Unity 5.6 doesn't instatiate object mantaining child position driven by animations

Hello, I have just upgraded to Unity 5.6 and I have a problem with this new version of the engine:
when I try to copy a gameobject by instantiating a new copy of it using as original object a gameobject on the scene that has an animation applied to it, the newly instantiated gameobject is created in the correct position but its children haven't the position that they have in the original gameobject (which have been changed by an animation that is playing).
What should I do to have children's position equals to the one of the original gameobject's children?

In the previous versions of Unity there wasn't this problem so I hope there's a quick fix to this.
If you want I can add some screenshots to better explain the problem.

Thank you,
Marco