I did a clean install of Linux Mint 18.3 on new (to me) hardware, then connected the previous HDD to that PC in a USB dock. Both OSes are 64-bit Mint 18.3. So I have the entirety of the old OS’s files available. I installed Brave on the new hardware using ‘wget -O’ to download the brave.deb file, then ran ‘sudo dpkg -i’ on it.
I fired up the new Brave install to confirm it worked as expected, then I closed it and copied everything in the old ~/.config/brave directory into the new. Which I thought was the approved method for a “heavy” backup.
Only it didn’t start. Initially I got a spinner for a few seconds, then …nothing. I checked ‘dmesg’ and didn’t find anything relevant and confirmed no brave process was running.
I don’t know for certain they are the same version of Brave, however, I did have auto-update enabled, and I ran the brave browser on the other hard drive (in different hardware) as recently as yesterday.
I note that the instructions on this web site mention using ‘~/.config/brave/`session-store-1’ for light backups but neither of my installs has a ‘session-store-1’ directory (or ‘session-store’ by any number).
What I’m trying to recover is settings, bookmarks, passwords, …the whole enchilada.