I always save everything anyway - for my own good. I 'Save As' all the time, so I create new PZ3s in a long string. And I keep them all. So one scene under development may lead to 25 PZ3s (or PZZs) and at least as many test renders. And during postwork I save everything in untold layers in Pshop - and never merge except to the finished jpg. And then I backup..... of course :o) So I can go back to any stage of development of any character or scene in the last SIX YEARS. I have thousands of PZ3s and test renders to look through when I need to find something or so. OK, it occupies a lot of disk space and DVDs and so on - but hell, disk space is cheap these days. Since I work with graphics, sound and video full time, I learned long ago to archive every single thing I do. I've never regretted it. And it's saved my skin many times. :] Fish