From Sonar 4 (SE), I'm trying to send a MIDI clip (with kick, snare and hat) to GS3 to trigger Larry Seyer Acoustic Drums. I load the "Small and Tight" kit (gsi file) in GS3, and all of the different drum elements in that kit show up fine as one stacked instrument (Port 1, Channel 1)(and I make sure the track in Sonar is output to that port and channel). But as soon as I push play (in Sonar), all I hear is the kick - "Montineri Kick". So I click on the minimized GS3 and find that all the other drums/cymbals in the kit are now gone from the MIDI mixer - only Montineri Kick is left (it had said "Stacked Instrument", of which Montineri Kick was merely one of 13 - but now it just says "Montineri Kick", alone). So I go over to the Loaded Instruments list and click on "Montineri Custom Snare", and I can suddenly hear the snare playing - same with the "13 Inch Light Hat". But as soon as I stop and restart the source clip in Sonar (or as soon as the clip reaches its end loop point and starts over again), the Snare and Hat disappear again, and only Montineri Kick remains.
I must be not understanding something fundamental about Giga. How do I get the whole drumkit to stay put and play?
[I hope it doesn't have anything to do with my MIDI clip being the product of the CAL function "Split To Tracks" (I told Sonar to split a JMT Orchestrator clip into separate tracks so I could send the drums to Larry Seyer drums in GS3)...]