Hi, I use separate business and personal computers and have separate Firefox accounts for business and personal. I needed to use my personal account for something while I was working, so I signed out of my business account, signed in to my personal, and when I signed in to my business account again Firefox had synced everything from my personal account into my business account, which I really don't want. How do I undo this and stop it happening again in the future? Many thanks for your help. Lee J