I wish I could answer this one. I would like to know the answer myself.
Hear that, those of you running TP?
My understanding is that Edge browser will sync between copies of Edge browser only. I'm not sure if it's to the point of being able to handle that on the mobile side of things yet. You would have to be running W10 on Desktop/Tablet AND on the phone in order to sync, if I understand correctly. I don't think there are any plans on allowing it to sync with IE, since IE is being pretty much discontinued.