Two months ago I moved my site to a new domain. And I let my old domain to expire. Then recently I realized it was a big mistake. I lost half of my traffic. The old domain has been taken up. Now what should I do to salvage my lost traffic?
Work hard and create good Back Links Again... U have old Back link URL's Sheet of that Domain.. Create your Links there .. Now the Old is Your Competitor Do Competitor Analysis
If your old domain was taken by your competitor then you need to try hard on your SEO activities. Do more SEO campaigns, write more quality content, create more quality backlinks I think if you do SEO on new domain better than your old one, then you will beat it. Good luck to you,