[TxMt] Blogging Bundle - Image uploads

[Lloyd Williams]

Help file reads:
Image uploading - simply drag an image into the TextMate editor  
window. The image is then uploaded to your blogging installation with  
the correct URL now inserted into your document.

http://5thirtyone.com/archives/648 says:
Image uploading - simply drag an image into the TextMate editor  
window. The image is then uploaded to your blogging installation with  
the correct URL now inserted into your document.

Does this mean if I drag an image file into the textmate Blog Post  
Markdown file that when I upload it will change the url to ../ 
wp_content/uploads/file_name.jpg

Or do I have to upload the image and manual edit the link before  
posting.

I tried without ftping the image or editing the link and posted as a  
draft and the wp edit window still shows the desktop location.