I'm a bit confused on this after seeing several threads with contradictory info on this. Currently I sync contacts onto my iPhone from MS Outlook on my own personal desktop computer. I sync my music with iTunes on the same machine. If I enable Exchange synchronization is it going to wipe out my contacts, calendar entries, etc, with what is on the Exchange server? Is there any option for configuring what components get synchronized (mail only, no email and contacts for example)? Thanks.