Outlook 2010 Is Recreating PST In Old Location When Trying to Move

I have followed the instructions from both here:
Moving Outlook 2010 PST files to a new location
and here: Move an Outlook Data File (.pst) to different folder and I am experiencing a behavior that is frustrating: Outlook is recreating the PST file instead of popping up the error message as documented.

My steps:

1. close outlook


2. Browse to location of PST files: (C:\Users\Patrick\AppData\Local\Microsoft\Outlook)


3. Move PST file to new location (D:\docs\Outlook)


4. Restart Outlook

At this point, I am supposed to get an error message. I do not. Instead I noticed that there are now, new PST files at the original location (C:\Users\Patrick\AppData\Local\Microsoft\Outlook) and that the old files are no longer used.

What am I doing wrong?

EDIT
It's NOT an OST file.
It is a PST file mapped to an IMAP account (if that matters).