I created animation from Mixamo and created DOLL 3d model animation in MAYA, then I exported it as OBJ sequence. The animation movement in Maya is fine, but when I put it in element 3D, it moves up a little when she punched. I imported it into videohive template, and I want to composite it with a 3d model. But animation becomes weird.
Without any specific info on how you set up things in maya and E3D we can't tell you much. This simply looks like the model pivot point was not aligned properly. At the very least start by checking the automatic centering/ bounding box in the E3D editor. Anything else will require much more info.