Animations that are uploaded to Roblox don’t match what is shown in Roblox’s animation editor when easing directions are applied. The animation editor shows the animation with the easing direction inverted, and therefore isn’t an accurate representation of the animation a developer will get in-game.
Here is an animation being previewed in the animation editor running on the left rig, and the uploaded version of the animation on the right rig:
Both animations have the same keyframes, and easing directions set.
Here is the animation editor preview with the easing directions inverted (‘In’ to ‘Out’, and ‘Out’ to ‘In’), and the same uploaded animation as before:
Both animations have the same keyframes, but the animation editor rig has inverted easing directions.
Expected behavior
The animation being played in the editor should accurately match the final upload result, flipping the easing direction within the plugin will fix this.