@mei you probably should set it up to keep backups of the last iterations because anything that you do to that file will be mirrored across every device instantly, up to and including deleting it. merge conflicts result in two files if I recall correctly, you can set up how syncthing handles it in the options

mei@donotsta.re I realized I was out of touch with non-techies when I said out loud once that Syncthing was easy to use and got roundly laughed at