Working with Supernatural Drum Kits in Integra 7 - GM2 midi files (SMF)

I cannot figure out how to: automatically load a SN Drum Kit when working with GM2 midi files. I can happily load the GM2 HQ sets (which uses all four slots). Do I tweak my midi file or can I simply select, and save, this via Sonar producer? Do I have to write the SN kit of my choice to a Studio set?