I-Firefox Community Forum

If I have edited the passwords file and bookmarks file and saved them to a folder via export feature. When I import the edited file into firefox how can I make that the master file and not have the other instances of firefox sync all the old data back to the master one I edited? For instance I have FF on android, linux and windows, if I import the edited file to the windows instance what is to stop the linux from syncing back to the windows machine? I have had this happen previously where a newer instance of firefox overwrote the bookmarks and password files. Will I have to delete all bookmarks and passwords and import them from the new edited file on each device?

I have a Windows 7 desktop with Firefox 115.35.0esr (64-bit) which was just updated today. I also have a Windows 11 laptop with Firefox 150.0 (64-bit). Now all of a sudden all of my bookmarks have been combined. The ones that were on the laptop are now on my desktop and vice versa. I started deleting the ones on the desktop that were from the laptop and they started to be automatically deleted from my laptop. How do I stop this from happening.