When I've used Lightroom before, the order between the NEF pictures in the Library module folders has been fixed – the only way to move pictures has been to create a collection. According to a tutorial I’ve seen, this is the way it is supposed to be. However, after having reinstalled the program from the backup after a computer crash, the order between the pictures has suddenly begun to change automatically when I use flags and star ratings. I can also move the pictures manually. Does this mean that my program is not working properly, and if so, how can I solve the problem? I’m using Lightroom 5 (bought online, not through Creative Cloud) on a Macbook Pro.
It means you should change your sort order.