Support Contacts duplicating

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http://androidforums.com – Hi, Just noticed there have been other threads on this topic but no luck. I have a Nexus 5 which is synced to Microsoft Exchange for contacts, email & calender. The Gmail account only syncs app-data, and nothing else is used to sync. The phone seems to keep duplicating my contacts randomly with no obvious cause. They then show up as duplicates in exchange once it syncs up from the phone. I've set the phone to only show exchange contacts. I cleared all contacts from the phone and removed the duplicates in outlook - then re synced the phone which didn't work for long before dupli (General)