Why are some of my animations not getting imported?

I have a character that I made some animations for where some of the animations are simple two frame animations where I have a bone stretched to an extreme. For some reason when I import the fbx for the character into unity these sort of animation don’t get imported. Does anybody know what I might be doing wrong?

I believe non-uniform scaling is only supported with Generic rigs - check your rig type for the imported asset in the project pane/inspector.