image download from php files

when adding an affiliate link into the wprobot article template with the options set to have the images downloaded and saved I ran into an issue.

The affiliate link contained code that was like:
img src=”http://affiliate-provider-site.com/referencenumber/imagenumber?12345657987″

which wp robot decided it was going to download and put it on my server.

It saved it as: imagenumber?12345657987 which then translated to code:
img src=”http://mysite.com/wp-content/plugins/wprobot/images/imagenumber?12345657987″

which obviously doesn’t output as an image because it does not have an extension.

WHAT I EXPECTED:
I expected that html code inside the templates would not be subject to the download the image to the server pattern. I expected that templates would be output as is.

Love to see this fixed either:
a.) template code images left exactly as html reads regardless of the general setting “download images to server” OR
b.) that images without a .jpg, .png, .gif, .whatever extension be analyzed so that the images don’t break

Thanks.