Without either of us knowing what happened I suspect what happened was that you inadvertently renamed your Sprint 2 to something else. The good thing is that (as the saying goes) not all is lost.
The sprints are really just containers of issues that are rather harder to lose in JIRA. If Sprint 2 happened to be actually deleted, all the issues will still be sitting there in your backlog. That or if it got inadvertently renamed, they are in a sprint now NOT called "Sprint 2".
I think your easiest course of action is first to find the issues you did have in Sprint 2 and either rename that one back to Sprint 2 or if it got deleted, make a NEW Sprint 2 and move the issues from the backlog back in there.
So... while this is all conjecture (based, I might add, on me doing something similar in days past) it might point you in the right direction.
Hope this helps
Over the next several weeks we'll be sharing some of our Getting Started guides here in the community. Throughout this series of posts, we'd love to hear from customers and non-customers ab...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs