Audio->Move to Start marker and end marker
|Reported by:||Jeroi||Owned by:|
|Sub Component:||Subtitle - Editing|
So atm aegisub supports only Move to current frame funktion.
But more easier method to sift lines would be audio open and then select all lines, and put start or end marker to place where the first original line is spoken, and from Audio menu:
Sift to Start
Sift to End
Also hotkeys for this could be implemented.