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Fixed in 2021.3.30f1, 2022.3.8f1, 2023.1.10f1, 2023.2.0b6, 2023.3.0a1



Found in





Issue ID




FBX animation results in different frame keys when imported from Maya



Steps to reproduce:
1. Open the “TestFBX” project
2. Unfold the “step_key_test_0_2_4_9_13_17_Frame_ascii” FBX file to reveal the “Take 001” Animation Clip
3. Double click to open "Take 001" Animation Clip in the Animation window
4. Go to frame 17 in the Animation window and observe the value in position.Z property

Expected result: position.Z value is 1
Actual result: position.Z value is 0

Reproducible with: 2021.1.0a8, 2021.3.21f1, 2022.2.11f1, 2023.1.0b8, 2023.2.0a6
Not reproducible with: 2020.3.46f1, 2021.1.0a7

Reproduced on: macOS Monterey 12.2 (Intel)

  1. Resolution Note (fix version 2023.3.0a1):

    The FBX actually has value 0 at frame 17, the FBX contains a keyframe of value 1 just after frame 17, but at frame 17, the value is actually 0. So in the Animation Window, when the user clicks on frame 17, it's expected to see 0 on position.Z.

    Issues are fixed by preventing the discarding of the keyframes if they have different values or different out tangents.

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