My Xbox keeps synchronising forza and I have lost all my stuff and now have to start at the begging again, how do I fix this!?
By waiting until the synchronization is complete and canceling it or disrupting it. Unfortunately you are beyond that point so you cannot “fix” it.
It’s really not broken either - if you prevent a full sync from happening you are telling it you do not want to sync and want to start over. Then when you start playing and the game saves it will sync that as your main file because it is the one you are playing and it is much smaller than the old one (so easier, faster) to sync…
Your best bet is to email Turn10 at firstname.lastname@example.org.
Responses are auto generated but your email will be read. They may even respond.