deleted

Has anyone had a situation where, when fighting the REF, when your units are defeated they're deleted rather than demoted?

The biq file I've been working on for weeks has disappeared. :cry: I started the editor as usual, chose my scenario from the list of most recent files, and an error message comes up saying that it can't find the file. So I open up the folder where it was saved, and it's empty! How can this be...