Mixing : Automation : Capturing Automation : Capturing Automation Values for All Controls

Capturing Automation Values for All Controls
You can capture the state of all automatable controls (except on tracks with their Automation Mode set to Off) in a session, regardless of whether they are currently writing automation.
To capture the automation values of all controls:
*
When you reach a location where you want to capture the current automation states, Alt-click (Windows) or Option-click (Mac) the Capture button.
To capture the automation values of all controls on selected tracks only:
*
When you reach a location where you want to capture the current automation states, Alt-Shift-click (Windows) or Option-Shift-click (Mac) the Capture button.