Why User folder shows My Documents but folder location is Documents?

I do wish to restart OPTION 2, but I have done the steps in OPTION 2 and moved the [C:\Users\Username\Documents] folder to [D:\My Documents]. There is no [C:\Users\Username\Documents] folder now.

How should I reverse the situation like I have never done OPTION 2?

Should the right steps be reversing the move like it has never been moved before, then I rename the folder [D:\My Documents] renamed to [D:\Documents] then I start moving using OPTION 2 to move [C:\Users\Username\Documents] to [D:\Documents]?

(Note: [D:\My Documents] folder already contains documents/folders created automatically by programs already)

Thanks a lot. I have done it successfully! :)

I used Option One at User Folders - Restore Default Location to restore Documents folder to "C:\Users\Username\Documents" (Option One is easier for me to follow)

I used Option Two at User Folders - Change Default Location to change to new location. I followed the steps TEXT exactly and ignored the screenshots folder names. (folder names seen on my screen in some steps are a bit different from the screenshots in tutorial)
Notes to myself for reference in future:
Step 3 name the new folder without the word "My". (e.g. [Documents])
Step 3 second screenshot will display [Documents] as folder name
Step 8 screenshot will display [Documents] as folder name
Step 9 screenshot will display [D:\Documents]
Step 10 screenshot will display [New location: D:\Documents]

Now the new location (the top horizontal address bar) shows [D:\Documents], and the name that is displayed on the folder shows [My Documents] and has the default user folder My Documents icon.

Done.