Okay try this..
Download and install this development build of FlashFXP
FlashFXP52_3877_Setup.exe
Then add this to the Argument
This will copy the upload as a http url, now for this to work you need to have the Copy to clipboard > HTTP feature configured for the site.
Site Manager > Select the site profile > Options tab
Copy URL - Mapping
HTTP URL:
Enter the http url such as https://oss.azurewebsites.net/
Server Web Root Path:
This is the path part that needs to be removed to make the HTTP Url valid.
Such as /home/user/public_html/