My animation edit won't work

I managed to retarget a Mixamo skeleton to match the Animation Starter Pack skeleton. the animation were a bit deformed so I readjusted them a bit (I pressed the + key to the start frame and then I saved). Now, when I click on the retargeted animation, it shows my edit, but when I drag it into the animation Blueprint or into the Blendspace, it shows the deformed animation. Why is this happening? Am I missing something?