ScriptReference/AssetPostprocessor.OnPreprocessModel

[giscus[bot]]

ScriptReference/AssetPostprocessor.OnPreprocessModel

https://docs.unity3d.com/ScriptReference/AssetPostprocessor.OnPreprocessModel.html

[lazlo-bonin]

Note that this is called even on models that already have a meta file, so it might overwrite your existing settings:
https://forum.unity.com/threads/under-what-conditions-is-onpreprocessmodel-called.985486/

The detection for whether it should run seems to only check local library artifacts, not meta file existence, making it unreliable to apply default settings.