Several days ago, my coder made a change, to "noindex, follow" gallery pages greater than page 1. I checked and it worked exactly as outlined.
Today I checked my traffic and we've lost 20,000 visitors today. So I quickly checked my SERPS and almost all are gone.
Somehow, he screwed up his code after I checked and now every page has noindex, follow on them.
What are the chances of retaining my SERPS now that the issue is resolved?