A couple of days prior to the release of the last world update, many users were getting update notices, even in the middle of operating the sim, and when users followed the update prompts, their sim was not updated and they lost their logbook and some of their registered content.
Investigation showed that the team was test loading the new content and when that was happening, users were getting the update notices when there was no content to download. I’m wondering if we are seeing the same false message to upgrade and wiping out our content folder? What saved me was having a full backup and restoring the content when prompted to upgrade, which is very similar to what is being suggested here.