Launcher deleted all saved installations!

When we started Minecraft Launcher today, it was showing as being updated to 1.16 but never prompted for us to download the latest version.  Then looking at the Installations everything saved was all GONE.  WTH??  How could this have slipped through QA and how did you manage to get it updated without prompting?  Now we have to reach out to all the server owners and get the connection details again.