Issues with importing animations from Motion Builder and MAYA to UE4.27

I have edited an animation in MB and exported it as an FBX file and tried to import it into UE4.27. However, the clavicle data altogether and the upper arm transform data do not import into UE4.27. This also occurs with animations that have been edited in MAYA. Does anyone know how to fix/ work around this issue?

I use the Unreal skeleton in both UE4.27, MB and MAYA.