Problem with blender animation

I created simple animation with 100 frames. Mainrotor spins and the tailrotor spins.
When I import it into unreal, I get like 50 animation sequences and none of them are the mainrotor spinning or tailrotor spinning.

Blender Animation:

Since it won’t let me put more than one link in the topic. Here is the rest of it.

Imported Unreal showing some animations

Any help is greatly appreciated.

I imported my animation into Maya and noticed a bunch of keyframes where the MainRotor is flipping the wrong way. I re-animated in Maya and exported as FBX and it works perfectly in Unreal. I’d like to know why Blender is doing this though.