Basically it is quite easy. Just choose the Mackie Control option in the X32 and the Mackie midi template in the midi device options from SAC. Works right out of the box. Of course only if you choose the X32 as an audiosoundcard for SAC. Because the midi data is send over the X-UF card. Than activate the Remote button on the X32compact (right above the sends on faders button) and you are good to go. The DCA faders are now your BCF2000 substitute, the X32 scribble strips will even display your SAC Channel nameing as well. Mute+Solo works too.
Christian

I'm interested in finding out how you had so far setup your Behringer X32 as a control surface for SAC. I recently got an X32 Compact and any help you could provide for settings on the X32 and SAC would be greatly appreciated.