With "Use Default Sample Rate" disabled, animations with 24fps get resampled to 30fps

With "Use Default Sample Rate" disabled, animations under 30fps get resampled to 30fps

1. Import the attached FBX Files
2. Ensure that Import Animations is enabled and "Use Default Sample Rate" is disabled
3. Open each animation

Result: The 60fps animation is 120 frames and 2 seconds long. The 24fps animation is 48 frames, but is 1.6 seconds long
Expected: Both animations are 2 seconds long

How to import 24 fps and 25 fps animation in to unreal