Ink file contents disappeared!

Hey! I'm trying out Ink and Unity Integration for the first time, and I just lost all my work.

I was editing the content of the Unity Demo Integration example in Ink, I went to reset the story, and it seemed to get hung with its CPU usage spiking. I force closed out the editor (my mistake) and when I reopened, the ink file was blank! Even checking the .ink file in a text editor, all content is gone. :(

If it matters, I did have Unity open at the time, although minimized.

I'm just testing things out right now and I'd use source control for a real project of course, but I'm still pretty worried about using a system if the whole story can just disappear! Is there any recovery method? I do have the JSON file that the Unity Integration creates backed up - is there a way to convert that back to an ink file?