Restore a deleted Sprint

[Nikki Bergendahl]

I deleted a sprint that had open cards/user stories by mistake, I guess.  I didn't realize I deleted it until days later when I tried to assign a user story to it and couldn't find it in my backlog.  From what I read the open stories moved to the next sprint below.  I have a gazillion stories in my backlog and it would be so much easier if there is a way to recover that deleted sprint and restore the stories assigned to it.  Note - I did not "finish" the sprint, I deleted it.  Thank you!!