Reproduction steps:

1. Open user attached project "My project.zip"
2. Add a new GameObject (XR > XR Origin (VR)) to the Hierarchy
3. Drag and drop XR Origin to the Assets folder to make it a Prefab
4. Open the XR Origin Prefab
5. Make any modifications to the Prefab
6. Select XR Origin > Camera Offset > Main Camera
7. In the Inspector observe Tracked Pose Driver the "Position Input" and "Rotation Input" values
8. Exit Prefab view
9. Observe Tracked Pose Driver the "Position Input" and "Rotation Input" values

Expected result: "Position Input" and "Rotation Input" values are shown
Actual result: "Position Input" and "Rotation Input" values have disappeared

Reproduced with: 2.3.1 (2020.3.48f1), 2.3.2 (2020.3.48f1, 2021.3.26f1, 2022.2.21f1, 2023.1.0b18, 2023.2.0a16)

Reproducible on: Windows 10