Here is the story in short,
I got a domain* with education related content registered from 2000 continuously that has a PR>5 for the last few yrs.
I cant access old content from that domain/website so I thinking what to do next.
At the moment I m looking to either re-develop domain with similar content or redirect it to another domain with similar content and hopefully keep the PR.
* Domain has some strong backlinks that wont be changed or removed easily.
What do you advise me to do?