I sometimes lose "vaporized" postings, but have never thought to blame Mudcat. I always figured it was me, or my computer, that was to blame.

And yes, the "Back" button works. It took me a while to figure that out, but now it's second nature for me. Works very much like / (or Edit/Undo) works when you inadvertently delete something in a post or an email or a Word document, etc.