I have 2 profiles and I wish to transfer my saved passwords from one to another. As far I see the procedure documented is to copy both key3.db and logins.json to the profile I wish to transfer my saved passwords on. However, once I launch Firefox nothing shows up in the password manager. Could it be linked to the use of a master password ? Could Sync somehow mess this up even if it's not configured to sync passwords ? (I notice that is the new profiles sometimes sync id shows up, but not after copying the files) I saw something about signon.importedFromSqlite but it seems to always set itself to true. I do know the quickfix is using an extension to export and then import the passwords, however I don't believe it to be an acceptable solution for something as sensitive as passwords. I'm using 59.0b4 for both profiles (that are after copying the files supposed to have the same password manager related files, the old one works perfectly, not the new one).