I created a backup of my project using File > Backup copy > Copy project and media into folder...
I can't figure out how to restore the backup. Judging by the content of the backup folder (a new folder, new file extensions and observing that files were pooled from differentdirectories) restoration does not appear to be as simple as copy/paste.
The only information that I found in th manual is on p. 224-225 and it leaves me wondering.