First i had problem in Syncing 495 outlook contacts with Facebook 8.1.. finally i manually sync almost 150+ contacts on phone other s are automatically synced without any problem .. after few days i update some email addresses, home addresses, work details, nots and added last names for 300+ contacts in my Lumia 920 WP8.1 DP (updated 8.1 DP).. after 2 weeks (today) i checked outlook.com contacts, email, names ect.. for 300+ contacts are not synced.. they are showing old detailes.. i checked Windows 8.1 in my lap top its also not synced.. i tried to manually sync on phone in email+Account,, no use.. anyone facing this problem in WP8.1 DP?