Problem about additive animation in montage

When I apply the additive layer to the animation and then create a montage the bones revert to the default position not using the newly update one.

The animation is right but they become strange when I put them in Montage.Applying the additive layer to the montage canot solve the problem that I want to use more animation with additive layer.

Sorry that I’m poor in English.If need more informaiton, just reply

My animation:



My Montage: