I noticed this while working on my latest video. I have two sets of track, audio and video, for dragging items in from two different cameras. I have three other audio tracks for background, replacement audio for odd noises in the main audio track, etc. On one of my audio video sets, I could not fade the audio out using the points on the audio envelope. No matter what I did, they did not work. Discovered it on two of my other audio tracks but not the top audio/video set. I compared the settings from a track that would allow me to control the audio levels to the ones that I couldn't and found no difference. I ended up moving the audio from those tracks to another and then duplicating a working audio track and moving things back. I checked my template and all audio tracks appeared to be OK. What could have caused the envelope points to stop working? Does this have something to do with the Automation? I did find that automation was on on one track. I tried to turn it off and thought I did, but its track settings were slightly different. If this is an Automation problem, how do you delete the Automation from a track? I am running the new Build 550.