Yeah, I got it working now but in a particular way I must say.
What I had to do is two of my free outputs giving the source signal of the usb recorder and assign that out to the card. There seems no way possible to have the routed usb recorder to inputs whatever getting recorded. Actually this is not so bad at all due to the fact my mono (used for the 15″ sub) and the main stereo out all sitting on 14,15 and 16 are being recorded now as well which is now giving me the separate and summed channels recorded.
Not bad at all B)