@hamed To you and anyone else wondering why, the duplicate scenes not working the same as the original is due to the bug wherein loaded scenes revert to 60Hz physics update. I was/am using 240Hz physics. So can't have more than one scene, due to this bug. I reported this discovery in the final comment, here: https://forum.hyperpad.com/topic/828/scenes-are-broken
On subject, I have found a way to get combining incrementation to uniquely identify and somewhat reference objects so a parent can instruct its child and a child can report back. It was messy, and contrived, and a pain in the butt. And needs to be completely rewritten for every type of object desiring relationships... so copy/paste would help. A lot. Or split screen.
Glad to see you back, @Hamed