I'm using Firefox 60.2.2, but I have to go down to an old version (52-56) to use some add-on that's not compatible anymore.
I created another user profile, since I had the impression using the same profile across versions could mess things around. However, I need to use my username/passwords in my old version.
I thought that transfering the
logins.json would suffice, but that's not the case.
How can I transfer password from the upgraded version to an old version?