CDN S3

HI

I have installed your plugin and have set up the CDN scenario – i have an S3 bucket allocated and Cloudfront – when I go to an image on my wordpress site and open it in a separate window to see if the image is being pulled from rye cloud my URL is
http://d3mhofifoczi39.cloudfront.net/mydomian.com/etc …..
which would suggest that it is working, but there are no images in my S3 bucket, should the app have uploaded all the image to my S3 bucket?

https://ww.wp.xz.cn/plugins/w3-total-cache/