How does this work according to Einstie?

Question

Two inertial objects move heading each other. When they cross each other , a light pulse is shot up. And when these objects look for the light pulse after they have gone a long way along, they find it just above their head. How do you explain this ?
The single pulse shot seem to be two.
Does this go against the Law of conservation of energy?

Answer 1

It does not violate it, information of the event is conserved.