balckberry messenger contacts shows pin numbers instead of names

Dear Sir ,
                  i have recently changed my blackberry device to balckberry  9700 , i retrived my blackberry messenger contacts through my gmail account , although all the BB messenger contacts has been retrived but some are showing pin number of the devices instead of names
kindly advice
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do you still have your old unit? Instead of retreiving BB messenger contacts trhough Gmail, I would backup the old device and restore on the new device. That way you will keep your contacts the way they were before.
Have you tryed to edit the contacts to change the name?

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