bvhacker

I’ve started using bvhacker to prepare files for import to blender (effing brilliant program IMHO). The only issue I’m struggling with is the orientation of the axes. Most bvh’s are “Y” up, while Blenders default is “Z” up. Does anyone know whether this can be fixed in bvhacker or, alternatively, how to alter Blender default to “Y” up???

Thanks.