Change Attachment URLs manually in database

I have a Multisite setup and one of my blogs has an issue where the posts for Nov & Dec 2011 have their attachments being uploaded directly to: blogs.dir/SITE/files not blogs.dir/SITE/files/year/month as I use on my setup.

Might have mistakenly turned OFF the use Month/Year folders option for Media Files for that site between that period.

I am attempting to fix it and have done the following but URLs in the Media Library & Media Uploader still refer to the old path.

1. Edited the Attachment GUID in the correct wp_SITE_posts table to use the new preferred path (blogs.dir/SITE/files/year/month)

2. Moved the image files from the OLD folder to the NEW Folders absed on Year/Month setup.

3. Edited Posts with that issue so their content reflect correct paths to images/media attachments.

Although inline media in posts show up correctly, Media Library & Media Uploader still show the OLD paths.

See this example: Post with Image

Inspect the broken at the right of the post header and change the path to reflect (Year/Month, i.e 2011/11), and the image shows up.

What am I missing? Is there another table or DB item I have to edit?