Hi,
Yes, it's me again, complaining about the Synchronize feature. I simply suggest to remove it for 4.0, because its shortcomings are too numerous. Besides, MySQL replication is the way to go.
Have a look at the tracker [0] [1]. It's not just a data synchronization problem; I made simple tests with the sakila db and while some tables can be structure synched (like actor), others cannot (like inventory).
Comments?
[0] https://sourceforge.net/tracker/?func=detail&aid=3441511&group_id=23...
[1] https://sourceforge.net/tracker/?func=detail&aid=3052078&group_id=23...