I think this is the link that wareyin referred to above:
http://www.cnn.com/2015/08/28/politics/hillary-clinton-email-classified/
I think this is the article that is supposed to prove that the information in some of Clinton's top secret emails had already been broadcast on CNN.
I didn't find that exactly, although the article does have a section discussing the situation if that had been the case. It sounds like public release of classified information does not automatically reclassify information. That seems to imply that this theory of Clinton's defenders that if classified information has been made public Clinton could just ignore its classification is wrong.
Another topic
The scandal as I see it now
1. Use of private email server
Not a big deal, may not have been illegal, may not have been against the rules.
2. Comingling of private and public emails.
Same as one, although it was a really stupid thing to do because it had the potential to make all of her emails subject to discovery something she figured out very late and attempted to deal with by just erasing her private emails, a strategy with a variety of pitfalls.
3. Failing to archive her emails
This seems like a clear cut violation of the rules and it looks like it was intentional. But probably the fact that she eventually provided her emails for archiving. the fact there may be some hyper technical legal defenses for her actions and the fact that there is a Democratic president will be enough to prevent legal ramifications over this.
4. Improper handling of classified material
If she was routinely communicating material that would have been expected to be classified or was obviously classifiable this will not go well for her. If the communications mostly involved material of low classifications and were not routine she might survive. I'm not sure that it is possible for those of us without special knowledge about what she did to make a good guess on how this is going to shake out.
Wild cards
1. The rumor that her private emails are for sale
2. The guy who set up and ran the server who took the fifth.