Backing up and restoring lost tabs
I often experience situations on Firefox where I lose all of my important tabs which I never end up getting back, despite having 'restore previous session' turned on. For instance, it happens when a software forcefully opens a "Thank you for installing" site while Firefox wasn't running, or when I accidentally open a link in a new window while being on private mode, when I meant to open it in a new private window instead..
On a different browser I used before switching to Firefox, I used to resolve this by going to it's profile location and looking at two files named "Current Session" and "Last Session". I could just rename the "Last Session" file to "Current Session", and all of my tabs would return. I was hoping Firefox would have something similar, but it seems either impossible or maybe just a bit more complicated, since I cannot find anything regarding this on the web.
Each time this happens to me, I go to my Firefox profile folder but cannot really find anything regarding sessions I could replace and restore. Only thing I managed to back up from the various important tabs I lost were six files in a fashion like this:
recovery.jsonlz4, upgrade.jsonlz4-[a lot of numbers]
Can I use these files to recover my lost tabs somehow, similar to how I used to do it in the different browser? Hopefully I'm understandable, it's a bit complicated to explain for me.