Delete a symbolic link without losing data

Some time back, I set up a symbolic link through the command mklink /J to shift the Google Chrome User Data folder from my C: drive to D:. However, I am now wanting to revert this change as I am not entirely happy with it. The online solutions I've come across are either outdated or conflicting with each other. Undoing this should be straightforward if only I had a clear method. I want to make sure that I retain all the data currently stored on drive D:.