Because fgimian’s steps is using files already located in the project folder, not across multiple drives/folders (since he mentions 4. Notice that the file is copied to the Audio folder of the project)
The point I am raising is the ability to safely archive your project and its samples, which might be in different locations. After ‘prepare archive’ the files are indeed copied to the project folder. However, when you re-load the project, the samples are loaded from their original location, not from the project folder. If at a later date the samples have been moved from their original location, you have missing samples.
I have spent hours campaigning for this to be fixed, along with many other people. It goes unheard. So I give up. I am wasting my time.