Pro Tools lets you write current automation values from any insertion point forward (or backward) to the end (or beginning) of a track or Edit selection in a track, or to an entire track or Edit selection, while performing an automation pass.
The standard Write Automation to Start,
All, or
End commands do not operate when the Pro Tools transport is stopped. It only affects automation for those parameters that are currently write-enabled and currently writing automation data.
Optionally, Write Automation to Start,
All, and
End can be configured to always be applied automatically. See
Writing Automation to the Start, End or All of a Track or Selection on Stop.