Awh crap, looks like this plug needs internal midi routing, Renoise does not yet support this. Yes, putting up a CC map is annoying if you have to do that everytime. However, you could create a custom template for Duplex that you can simply load everytime you need it. Then you only map the CC’s once and simply select your saved template. Duplex might not look as slick as the plugin, but it would do the job nevertheless.