Exporting to PDF an External Image

Hello,

When U try to export a page than contains an external image it doesnt appears in PDF or RTF export.
Only appears if the image is attached to the page.

Samples:

{image:http://www.someurl.com/image2.jpg}

It Doesnt appears in the PDF
<img src=" http://www.someurl.com/image2.jpg" > It Doesnt appears in the PDF

{image:image2.jpg}

It appears in the PDF

I need to export external images to the PDF.

Thanks in advance.

Sorry for my bad english.