Hi,
What can happen is that when there are system updates, such as Windows updates and drivers, especially chipset drivers, the driver list resets and reloads the driver's INF file. This is normal.
So it doesn't forget. Exactly, it just resets the driver list. You can see this in the Device Manager tab > Show hidden devices, which has a list of recently loaded drivers. This is correct because if a driver has a fault and a new version has been released, you can revert to the previous one. Now, the issue is saving the settings. This is not handled by Windows but by Logitech software. As the driver may have been updated, it may have lost its reference, especially without a period of use, so it's normal.
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Thanks