Mixing : Automation : Automation Preferences : Send Levels and Trim Mode

Send Levels and Trim Mode
(Pro Tools HD and Pro Tools with Complete Production Toolkit Only)
You can set Pro Tools to exclude Send levels from Trim mode, so that only the Main Volume goes into Trim when a track is put into Trim mode. This gives you more flexibility in setting Send levels while in Trim mode.
To exclude Send levels from Trim mode:
1 Choose Setup > Preferences and click Mixing.
2 Under Automation, deselect Include Sends in Trim Mode.
*
Any uncoalesced automation on a Send will still coalesce when the other automation on its track is coalesced, even if “Include Sends in Trim Mode” is deselected.
3 Click OK.