If you use sync, ALL selected data would be merged with all members of the sync.

You have two options.

1) Create a new sync but sync only login data.

2) Password:Recovery:Restore:Export https://www.ghacks.net/2018/07/18/how-to-export-firefox-passwords-in-firefox-57/ +++++++++++++++++++++++++++++++++++++++++ http://www.nirsoft.net/utils/passwordfox.html (Win) PasswordFox v1.58 - Extract the usernames/passwords stored in Firefox Copyright (c) 2008 - 2017 Nir Sofer

Note: Some anti-virus show false positive. +++++++++++++++++++++++++++++++++++++++++ Easily export your passwords from Firefox. https://github.com/kspearrin/ff-password-exporter

Export your passwords from Firefox in a portable CSV or JSON format. It works on Windows, macOS, and Linux. +++++++++++++++++++++++++++++++++++++++++ 3 Tools to Decrypt and Recover Passwords Saved in Firefox • Raymond CC https://www.raymond.cc/blog/how-to-find-hidden-passwords-in-firefox/ +++++++++++++++++++++++++++++++++++++++++ https://www.ghacks.net/2018/07/18/how-to-export-firefox-passwords-in-firefox-57/ +++++++++++++++++++++++++++++++++++++++++ https://github.com/kspearrin/ff-password-exporter +++++++++++++++++++++++++++++++++++++++++ If you don't find a third party script or program you can trust, you can run a script in Firefox's Browser Console to spit out the list in CSV or JSON format. For example:

JSON file: https://support.mozilla.org/questions/1258644

CSV: https://support.mozilla.org/questions/1253828 (copy/paste from console)

chrome://passwordmgr/content/passwordManager.xul

chrome://passwordmgr/content/passwordManager.xhtml

In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password.

Firefox stores the login information to connect to the Sync account as a hidden entry (i.e. not visible in Lockwise) in logins.json in the profile folder as "hostname: chrome://FirefoxAccounts".

EDIT: Note that you need to copy key4.db as well if you would copy files to another profile and copying this file will replace are currently saved logins, so you may want to keep a copy of logins.json and ket4.db or export existing logins in case you have special logins stored in a profile.

• https://support.mozilla.org/en-US/kb/export-login-data-firefox-lockwise