Main toolbar > Open Track View > Select keys to align to current frame. > Track View toolbar > Align Keys
Graph Editors menu > Track View > Open Track View > Select keys to align to current frame. > Track View toolbar > Align Keys
Use Align Keys to move selected keys to the current time. Select the keys to align using Move, Slide, or Scale.
Align Keys is useful for taking a group of scattered keys and moving them to the same time location.
Align Keys is available in Edit Keys and Function Curves modes.
Align Keys ignores the state of Snap Frames, and always uses the exact time set by the time slider.
Procedure
To move all selected key dots to the current frame:
Make sure Edit Keys is active.
Drag the time slider to the time where you want the keys aligned.
Select one or more keys using Move, Slide, or Scale Keys.
Click Align Keys.
The leftmost selected key in each track is moved to the current time. Multiple selected keys on the same track maintain their relative distance from the leftmost key.
Interface
Align Keys: Moves all selected key dots to the current frame.