There is no foolproof method, unfortunately. What I am about to disclose after MANY hours of testing in lab environment and even directly on server will be earth shattering.
Your steps are pretty good. Actually, they are very accurate. The only thing I would change would be not to copy over the original folder. That should work, but I have seen too many strange occurrences with databases especially with AC. Obviously, you wouldn't need to copy and paste except for once.
To see my my white paper on the glaring fault of Sync, see my post. I don't use it (and I am glad), but I don't see how it is useable unless you have a big meeting with your staff before.
