Title says it all... More precisely ON an extarnal hard disk I had a songfile with 15 multitrack songs recorded the same day. In a first stage I started mixing in that original songfile, concentrating on songs #3 & #4, which I first thought should be treated about the same way. Then, I copied that original songfile twice, renamed it #3 and #4, deleted the irrelevant audiofiles in each song's bin, and saved them as two projects on my MBP's internal HD so I could work anywhere. Then each song went its own way; they now sound quite different from each other. What I'd like to do now is copy a state of song #3's mixer at a certain point in time and paste it at a certain other point in time in song #4, temporarily bypassing its original automation and settings, just for checking purposes. Since the disposition of the tracks is the same in both songs, I tried "copy audio configuration" which gave me extremely bizarre results... searching "copy mixer" in the manual gave zero results... So before pulling more hair I thought I'd better ask around first : how can I do that ? Pursuing the idea... I would love it if Logic would enable me to switch not only between different "mixer states", but between distinct "master mixer tracks", complete with automation movements. The switches could be recorded and edited; you could choose to make them happen instantly, or gradually (morphing). Maybe it's all there already - with Logic you never know Thanks for any info.