David, thank you for your response. Most of my concerns have since been solved with MC3.0. I can now transcode XDCAM HD footage shot 30p to DNxHD145 with out the blow up that was happening in 2.8.3.
I would like to work in a 1080/60i project since it is the deliverable for broadcastors, good for most SD material, and good for 1080/30p as well. I haven’t yet tested if 720/60p (for action shooting)or 720/30p (for the 60fps slow-motion effect) are accepted in this project format.
A more pressing EX/AVID problem has come up since concerning workfow and a possible software bug with CB2.0 or MC3.0. If you are curious, here is the post:
https://community.avid.com/forums/p/61905/346902.aspx#346902
Richard