Output animations is different after retarget

Hello everyone.

I have a problem, the animation output is different from Retarget, I don’t understand why. (at the neck/head level in this example).

I put the chain mapping of the head in absolute in the RTG, shouldn’t it be the same after the retarget? It’s not the same result at all.

Thanks a lot!

Anyone know why chain mapping (in absolute) is not saved with the output animation ? This will help me correct some messy animations… I use UE5.4.

Thanks