hitme21 If you edit any photos and resave them this changes the order.
If you edit oustide of Tonfotos while Tonfotos is open, and this folder is displayed, then yes, changed files will be added to the end for better user experience. However, when you navigate out and then return, files will be sorted by date again, but not by last modified date. It will be sorted by creation date, if exists obviously. Not every file has creation date in metadata.