Move Rigidbody2d along with parent object

May be I had broke something in my project, maybe some physic logic was changed, but since Unity 5.1 when I set Rigidbody2d (Player) as a child of some platform with BoxCollider (floor) and then platform moves, Rigidbody is stay on the spot and eventually slides over platform instead of staying on the floor and movind along with it.

so, my “platform” collider

and my player rigidbody

I assume the only thing changed since last time it worked properly is this new Constraints on rigidbody, but I don’t think it may cause the problem.

I’ll be really happy if you’ll help me. I need to fix this fast but already spend a day trying to locate the problem

The rigidbody won’t move unless some force acts upon it. If the platform is moving using positional change instead of velocity, you’ll likely have to create a script for simulating the carrying effect of the platform.

Well… I see why it’s not working, just really frustrated why it worked perfectly fine for a long time. I mean it kept local position of rigidbody along with parent transform movement.
Okay then. I’ll handle this through script. Thanks you