Hi Peter,
You’ve run into a bug. This seems to happen if you have rendered in source mode once, and then trying to render in target mode. All the target clips are getting the same ID, and hence Avid thinks they are the same. This will not happen if you didn’t render in source mode before rendering in target mode.
For the moment, can you render to Quicktime, and take it to Avid that way?
We hope to have a fix for this soon.
Regards,
Rohit