I've been using the watch since day one on an old 5S updated to 8.3. I am now contemplating if I should give up my 6 with JB 8.1. Therefore for the past 3 weeks there are activities accumulated on the 5S. Is there a way to keep those record and transfer it to the 6? Can I sync the 5S and then restore from the 6 then sync? Anyone tried this?