Is it possible to export an existing animation package into blender?

[tempLLS4THING]

I'm trying to export Wicked Whim animations into blender to use with an exported Sim.

In Blender I can have more control but I really need these base animations in there to start with.

 

I've looked into Sims 4 studio but can't for the life of me work out how to do this. Whenever I try to export on the animation tab I get "KeyError: 'bpy_prop_collection[key]: key "b__ROOT__" not found"