My skeleton is mising bones from bind pose

When i import my skeletal mesh, which has every bone assigned, It says there are bones missing from the bind pose.
In Maya, it says the skeleton is fine and a normal IKHuman Rig.


I also ran into this problem. What seemed to work (so far) is when importing into UE4 within the import menu there is a drop down box with a chick box TOAs

or something, I attached a pic to help you out. See if checking that box helps

I think this problem is in your design editor.
Be really sure if u use the correct bone to the correct object.