Contacts linked when syncing outlook 2013 to BB Z10

I am using Outlook 2013 with buy office 2013 standard OS. I've over 6000 contacts kept in Outlook with lots of from the contacts having the same Business address and business telephone number. None of these contacts are linked. When I perform a 2 way sync from my computer to my BB Z10 using BB Link my Outlook contacts that share exactly the same business address and phone number become linked. Even the same contacts are linked on my BB device. This contact file is primarily a summary of real estate agents, many of whom share the same office address and office phone number.

I deleted the bblink account on my small device, then I deleted all the links in buy windows 7 and tried again, this time around performing a 1 way sync from my computer to my device. Same result: hundreds of linked contacts in Outlook and on my device.

How can I execute a sync of those contacts without leading to linked contacts.s