Reproduction steps:
1. Create a new project
2. Window > Package Management > Package Manager > Shader Graph > Samples
3. Import any of the Shader Graph Sample (e.g. Feature Examples)
4. Import Production Ready Shaders Samples
5. Observe Production Ready Shaders Samples folder in the Project window
6. Observe Production Ready Shaders Samples in the Package Manager

Actual result: “Import” button is still present when Production Ready Shaders Samples are imported
Expected result: “Reimport” button is present and Production Ready Shaders Samples are imported

Reproducible with: 6000.3.0a6, 6000.3.7f1, 6000.4.0b7, 6000.5.0a6
Not reproducible with: 6000.0.66f2, 6000.3.0a5 (f9a1fab5607a)

Reproduced on: Windows 11, macOS Sequoia 26.2 (M4)

Note:

• Issue is no longer reproducible after deleting Samples folder and importing it again
• Issue is not reproducible when importing Production Ready Shaders Samples only