Hey, thanks for reaching out, I'll gladly help!
The thing is, Zemanta unfortunately doesn't work in the WordPress's default Dashboard anymore, but can be easily re-installed via our browser extension.
It comes with all the features you're already used to (images, in-text links, related posts & tags) and is really easy to set it up. Just follow the link to our downloads page and install the appropriate extension for your browser.
Here's the link: http://zem.si/PqCSDD
And please do let me know how it goes or if you have any more questions what-so-ever, since I'll be more than glad to help you out!
Here's my email address: support[at]zemanta[dot]com
Take care & I'm looking forward to your reply!