I've spent a long time tidying up the passwords on my main PC. Every so often I did a manual sync too. I also imported into Edge occasionally and I noticed a few sites' details there that I had deleted from FF. Strange! Anyway, I finished the tidy up and went to my Android phone (set up to sync) and did the sync there and it looked OK. I then had the idea to look here for the 'extra' one I had seen in Edge and sure enough it was there! I also noticed lots of others I had deleted from the 'Master'. Changes to passwords had been replicated successfully though. What is the logic for syncing in these instances? I then signed out of FF on the phone to stop the sync and deleted one that was common to both and then signed back in and synced - it did delete it from the PC when I synced that. This makes me nervous to delete them all from the phone when signed out and syncing upon re-connect. So, what is the safe way to make the password details from the PC be an exact copy on the phone - no extras?! My thoughts were to disconnect the phone (but hoped it would remove things), delete the details manually if required, sign back in and re-sync. But I don't want to risk the sync actually wiping out the contents of the PC! Thanks!