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Windows 10 OneDrive: The content of This PC > Desktop became empty when a backup disk is installed

First, Desktop backed up by OneDrive refers to four different folders.

  1. What is displayed on the screen.

  2. Folder This PC > Desktop

  3. Folder OneDrive Personal > Desktop

  4. Folder Desktop in my OneDrive data stored on the Microsoft server.

If these are properly synchronized, their contents must be identical.

I experienced the following problem.

The disk on which windows 10 was installed failed.
So I installed a disk which was created about one month ago by restoring backed up System Image. Then the the contens of 3 and 4 were correctly synchronized. However the content of 2 became empty and nothing was displayed on the screen.

When the backup disk was installed, the old content was initially displayed, but folders and files disappeared one by one.
I expected that the latest content would be displayed, but it did not happen although 3 and 4 were correctly synchronized.

Any Help will be appreciated.