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.

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

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.