CS6 "Save for Web" "Convert to sRGB" Issues

Hello,

I'm aiming to take RAW photo files, edit them in a wide color space, and when posting them to the web, save them as sRGB.

My workspace is as follows:

I open RAW files in Photoshop via ACR as 16-bit ProPhoto smart objects.

When I finish editing them, I use "Save for Web" with the "Convert to sRGB" and "Embed Color Profile" boxes checked.

Photoshop and Bridge tell me the profile in photos saved as such is sRGB as expected. When I upload to a site like flickr, however, the metadata says the photo is still in ProPhoto. See an example here: http://www.flickr.com/photos/nrbelex/7950202448/meta/in/photostream

If I use "Convert to Profile" and change it to sRGB, then upload to flickr, the metadata says the photo is in sRGB, as it should be.

What am I missing here?

Thanks!