I don't think that stuff is supposed to export well to Godot. I wonder how Godot would even render that. The only way I can think of that does not involve modifying the engine is to import the baked simulation as a series of meshes, one per frame, and have Godot load them all and show them one by one every frame, maybe with AnimationPlayer... but I think even that would require a special importer. I have no idea what the data would look like. It might be a bit easier if Blender allows to export the simulation as a list of OBJ files maybe?