I have a maya made rig and animation exported to fbx.
Import to Unreal Engine seems to work fine but I need to change parts of the geo, so I want it inside Houdini.
When I import it this Warning comes up:

Warning: Found multiple animation layers per stack. Only one animation layer per stack is currently supported.

Using FBX Character and Animation Import Nodes doesn't work properly either.
Some animation gets lost.

Is this a current limitation of how Houdini handles FBX?