Sorry for th elate reply. didn't get a chance to test it until now.
YES, it worked indeed.
I setup a separate folder where I extracted my backup.
Then I installed a fresh GRAV on the required domain, and did the initial setting up as a user. I now had a fresh GRAV site setup.
I then renamed the 'user' folder to 'userORIG', and finally simply dragged and dropped the restored 'user' folder into the root of the domain (beside the 'userORIG' folder.
Please note, if you try to drag and drop within cPanel, then some hidden files might be left in the extracted place. I therefore user drag and drop in Filezilla.
All good and KUDOS to JERRY.