Losing saved texts

Did anyone else lose texts that were surely saved? This has happened one day after changing the text icon in the binder
I’m using Scrivener 3.0 and High Sierra 10.13.3 with default autosave and manual backup after each day of work.
What could I be doing wrong ?

Just in case because I’ve seen this happen a lot - By any chance do you backup using File | Save As…?

What happens when you use that is Scriv makes a copy of your project and then continues on working in the new copy.

So say you did a File | Save As… to back up your project into a backups folder, and then were really productive writing all kinds of great new stuff. Next day you open your project by double-clicking its icon on your desktop. Well, all your new work will appear to have been lost because it was saved into the copy you made and not into the original project.

If this has happened to you, you can open the original and the copy side by side in two different windows and just drag any missing binder items over.

When making a manual backup, always use File | Backup, not File | Save As…