Reproduction steps:
1. Open the attached “in-61679.zip“ project in 2022.3.X or earlier version
2. Select “TextureTest.jpg“ Import Settings and change the Max Size in the Inspector
3. Apply the changes and upgrade the project to 2023.3.X version
4. Select “TextureTest.jpg“ Import Settings and observe the Console and the Inspector

Expected result: No error is thrown and the Inspector shows settings for different Platforms
Actual result: “UnityException: Could not find the requested Platform Texture Settings. This is incorrect, did initialization fail?” error is thrown and settings for different Platforms are not shown in the Inspector

Reproducible with: 2023.3.0a11, 2023.3.0a16
Not reproducible with: 2021.3.32f1, 2022.3.14f1, 2023.2.2f1, 2023.3.0a10

Reproduced on: Windows 11 Pro
Not reproduced on: No other environment tested

Notes:
- Full error:
”UnityException: Could not find the requested Platform Texture Settings. This is incorrect, did initialization fail?
UnityEditor.TextureImportPlatformSettings.CacheSerializedProperties (UnityEditor.SerializedProperty platformSettingsArray) (at <9686d4a4f631406985a2d405a4df46ad>:0)
UnityEditor.TextureImporterInspector.<OnInspectorGUI>b__119_1 (UnityEditor.TextureImportPlatformSettings settings) (at <9686d4a4f631406985a2d405a4df46ad>:0)
System.Collections.Generic.List`1[T].ForEach (System.Action`1[T] action) (at <14e4a9820ff247cfb8572e39a43ae8fd>:0)
UnityEditor.TextureImporterInspector.OnInspectorGUI () (at <9686d4a4f631406985a2d405a4df46ad>:0)
UnityEditor.UIElements.InspectorElement+<>c__DisplayClass74_0.<CreateInspectorElementUsingIMGUI>b__0 () (at <9686d4a4f631406985a2d405a4df46ad>:0)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)”
- Issue is only reproducible after changes in Import Settings are applied and project is upgraded from 2021.3 or 2022.3 stream