Alembic File don`t work with Parent Object

Hello, maybe here i get some help.
i have attached an area light with the parent function to an imported alembic character (with animation)
When I move the character with the mouse, the aera light moves with it, but when I start the animation, the aera light stops at the starting position and does not move with it. Does anyone have any idea why this is or knows what i to wrong? I’m looking forward to an answer and thank you in advance.