Thanks for your help rharv.
I understand what's happening more now. It's bit dissapointing really, coz as I see it then and after some experimenting, a good quality GM sound module or Synth will make no difference to my setup having to use the DXi to enable me to transfer biab tracks to wave into my DAW.
Apart from as you say as a realtime recording but resulting in the whole song on one track.

I now remember I had this problem a few years ago when I had my old multitrack mixer so I used to record each track in realtime to the mixer using the Korg X50 GM sounds. Long winded but it worked as the Korg mixer had a sensor option to auto record as soon as it heard the first note, so everything was in time and position. I don't think I can do that in Guitar Tracks or Sonar. It's one reason I tended to follow the realtracks developements and use MIDI less and less.
I wonder how others working in the same way get around this problem.
I guess a top sound module/synth is great for play back quality of Biab songs but I do want to edit and mix in my DAW.

I actually tried REALBAND last night first time I have used it for a long time, certainly improved since I did, think I will look at it closer now.

Happy New Year to ALL.
Jeff