RE: MXROAD SS3 - 2D DWG Export - Exporting 3D polylines, standard polyline required

I am having this problem on a large project where we are needing to batch convert a large number of plans to 2d dwg. Converting to native DGN then DGN to dwg manually is not really an option. I would also like to avoid having to manually explode and flatten/rejoin the polylines etc as this means we can't easily automate the process.

Is there a way to convert to native using the batch converter or some other key in in microstation?

Thanks