Static mesh material slots incorrect when upgrading project from UE4 to UE5

Licensee reporting material slots being incorrectly assigned when loading an asset created in UE4 into UE5 via an upgraded project.

1. Download project from https://udn.unrealengine.com/s/question/0D54z00007qxD7ZCAU/material-issue-when-upgrade-project
2. Open the project with UE4
3. Open Tropical_Jungle_Pack/Meshes/Trees/SM_tree_medium_01
4. Check the result of LOD3
5. Close everything, open the project in UE5 (in a copy)
6. Open Tropical_Jungle_Pack/Meshes/Trees/SM_tree_medium_01
7. Check the result of LOD3

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