So I was having some desktop time on my PC and mozilla was opened with lots of tabs that didnt need a bm's so I never saved them cause they we're restored whenever I opened mozilla again. However, today, Mozilla opened a new window telling me some updates we're done and then I close it down remaining with the original mozilla window from this morning. Later I closed this one down as well and when I opened it I lost: 1. All logins. 2. All tabs. 3. All my Dials from FVD Speed Dial addon. Not knowing what happened to them I close this window down to reopen it but nothing changed. This technic worked in the past.

I looked in the backupsession folder But all I had some sessions from 2016 and 3 from today. I checked in the Session History link this files and none of them contained my tabs from today which we're really important. I dont know about the dials, but those are gone as well.