How to recover data after "clear cache"

Ramses, I’ve added a similar question in these forums but perhaps should have started here. I have the same issue, cleared the cache without thinking. But I have now “added” every graph I’ve ever created and none of them open to the one I was using when I did that dumb thing. I get instead, just a welcome, and a new graph. I am freaking out because I’d done so much work on this wonderful app. There must be something I’m missing, right?