lol. That used to drive me nuts. Then I realized it was normal
Here’s the cleanest simplest description I can find…copy based from the avid website:
Auto off- This mode will bypass all automation written to the track
Auto touch-This mode will duplicate all curves you created, until you touch the fader. One you touch the fader, new automation will be written for the duration of the time you have your finger on the fader. Once you release the fader, the automation will revert to pervious written automation curves.
Auto latch- This mode behaves just like auto touch but, instead of moving to the previous automation curve when you release the fader, it will stay where you last left it “latching” to the volume level.
Auto write- This mode is an “absolute write” mode: it records the position of all write-enabled controllers from the time that playback starts, to when it stops. It erases any previously recorded automation on the track for the duration of the automation pass. When you stop ProTools while you are still “holding” a fader or controller, ProTools will ramp up or down to the next automation position on the track. Write mode is most useful for recording a first automation pass. Once you have created this basic first pass, you can edit or augment it by recording additional passes using Touch mode.
Auto read- This mode will simply play Automation back that was recorded to the track.
Trim Automation- This mode will maintain your automation curves that you created and raise or lower the volume as you see fit. Actually really handy when you hear the sentence “That automation curve is great, but can you bring it down just a hair…” This mode is much less time comsuming than redrawing the entire automation curve.
A good workaround to this situation is to send the automated track out a bus, and then re-record to a new track. From there you can boost or attenuate the volume accordingly. You will not be able to edit the origianal automation curve, but you will maintain the volume changes you wanted.