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By Design
Votes
1
Found in
2017.4
2019.3.6f1
2020.2
Issue ID
1253219
Regression
No
New animation clips are not imported correctly when re-importing a fbx file
How to reproduce:
1. Open the attached project "FbxModel.zip"
2. In the Project window, go to Assets and select "art_HeroBigMountA_animset"
3. In the Inspector window, see if 12 Animation Clips are visible
4. In the Project window, right-click on the Assets folder and click Show in Explorer / Reveal in Finder
5. In the Explorer / Finder window, go to the Assets folder and replace "art_HeroBigMountA_animset" model with the new "art_HeroBigMountA_animset" attached here
6. Focus back to Unity Editor
Expected result: "art_HeroBigMountA_animset" reimports with correct animation clips
Actual result: "art_HeroBigMountA_animset" reimports but animation clips remain from the old file
Reproducible with: 2017.4.40f1, 2018.4.23f1, 2019.4.0f1, 2020.1.0b12, 2020.2.0a14
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Resolution Note (2020.2.X):
This is by design, documented here: https://docs.unity3d.com/Manual/class-AnimationClip.html
"Warning: If you manually change any properties of the imported clips, Unity will not import new animation clips when the source Asset changes. For example, if you create a new clip or change a clip’s timing on the Animation tab, that clip list will not change even if you add clips to the FBX file outside of Unity. Unity will ignore the new animation clips."