I worked freelance from high school as a "web designer" (I'd label myself a front end developer now) for a bad client. Not good, not a client from hell, but overall, it was a bad time. I spent 9 years embedded in this site only to have a situation arise where I needed to move away from the place I lived to the place I live now and pretty much lost all proof that I did work on this website. Add insult to injury, the site is now GONE except for traces of it existing on the Wayback Machine.
I'm trying to find work now and I've created a small portfolio site to recover and rebuild, but the question is what do I do about this experience with the client? Do I use it? Do I drop it? Am I lugging around 9 years of dead weight or can I salvage the situation somehow?
Edit: I forgot to mention that when I lost all proof, I meant the package briefs regarding the work. I have some emailed briefs, but they might not be enough.