I have been using ACR to edit raw files for 10+ years, and for what feels like the 20th time today, lost about two hours of work because of a power outage. I would love a way to auto-save the image edits that I have done (often working with batches of 500 or so images). As it is now, at any point I need to save, I would need to click done on the entire set of images .... then re-open them again to keep working without the risk of losing all of the edits I did. This process takes several minutes, and I have to do it multiple times a day every day. Today, I left the images I was working on open, left the computer for a little while, left the house for a 1/2 an hour, the power went out, so nothing was autosaved and I came back to having to re-do 2 hours of work. This is a basic feature that all word processors have, the ability to auto-save and restore your work. Since all the info is stored in small sidecar files, it shouldn't be that complicated to add.