Matches your loop’s start & end keyframes perfectly.

Redo Panel
Target
- Selected F-Curves: targets selected F-Curves
- Selected Keyframes: targets selected Keyframes
Vectorize Start & End
Converts the start & end keyframes’ handles to Vector which allows for seamless playback if the keyframe’s handles aren’t flat. It then converts them back to their previous handle type.
Match
- First: uses the values and handles of the F-Curve/selected Keyframe’s start keyframe to match the start & end keyframes.
- Last: uses the values and handles of the F-Curve/selected Keyframe’s end keyframe to match the start & end keyframes.
Match Angles
When enabled, the handle angles of the start & end keyframes will match. This is useful when the start & end keyframes’ handles aren’t flat.
Match Lengths
When enabled, the handle lengths of the start & end keyframes will match.