Posts from Videos for maps are disappearing. Auto-translated

The problem is that the videos disappear without a trace when I restart the map editor. And it's not because the editor crashes; they simply vanish! No folders, no files, nothing! What do I need to do to prevent the videos from disappearing?

Added 3 minutes later
I even created a folder in Data, in the DialogScenes folder, for my dialogue, but it disappeared as well.