Please add a screenshot of what happens after step 7 is completed. I had to raise a microsoft ticket to understand what happened after step 7.

https://learn.microsoft.com/en-us/power-platform/admin/backup-restore-environments#restore-a-manual-backup

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There was no update on my screen after it happened. I spent an entire day for something to come up as i thought it was similar to a backup notification. After reattempting to perform the restoration next day i realised a screen with 4 steps comes up.