As I have not had a response to the questions above I have managed to provide my own answers. These may be of benefit to other 9000 users.
We were experimenting last night. Create a Solo Improvisation in BIAB ( Say In Bossa) We did 16 bars. Set 9000 to Midiclock Out and open up Multipad Create. Set Pad Channel Record to Channel 8, this is the default out put for the Solo on BIAB. Start BIAB on PC which will start the 9000 recording for the 16 bars into the selected pad. You now have a nice 16 bar Solo Improvisation by pressing the appropriate pad button to play along with your live melody.

Remember for playback to set the pad to LOOP & CHORD.

Graham UK