Suppose I schedule a full image on Sunday and then incremental images on Monday through Friday. The file name for the Sunday job is named "image". At the end of the week I have 6 files: image, image1, image2, image3, image4, image5. On then next Sunday the file "image" is replaced with a new full backup. Right? What happens on Monday? Does "image1" get replaced or do I end up with a "image6" file?