Importing Squash and Stretch Animations and Rigs

I have rigged and skinned a simple ball using 3ds max’s bone tools and enabled squash and stretch. When i animate a simple squash animation to works fine in max but i cant seem to figure out how to import the animation in to ue4.

I’ve seen online that using squash and stretch is possible but cant seem to make it work. I’m baking my animations on export and setting ‘preserve local transform’ to be true on import but all i can seem to manage is getting the bones to move correctly in the engine but the skinned mesh not move with the scaling of the bones.

The mesh moves as if the bones were only moving and rotating rather than scaling How do i get my mesh to scale with the bones in the engine?