Before I begin, apologies in advance if this was answered many times already. I have a situation where I have two work computers and a personal computer. For a while, I used a cloud storage solution to sync a single profile folder across my devices, but something messed up at some point, so I have not been doing that for a few years. Now I have three different profile data (specifically logins and bookmarks) that overlaps on some areas, but are different in others. I would like to merge them all without losing any data, but I don't want to just blindly create a mess. So what happens when I log into same Firefox account across these devices? What would happen if I have different logins stored for the same page? or if some of the bookmarks are organized differently?