Import Outlook contacts into Entourage

Hi all,

I’m trying to import contacts from Outlook 2007 into Entourage.
The contacts were exported to a .csv file and moved to the Mac machine via flash drive.
When I import from text file in Entourage, there’s at least double the amount of actual contacts, most of which are blank.

For example:
The csv file contains 290 entries.
When imported into Entourage, 560 entries are imports.
The remaining 270 entries are blank.

Any workaround for this issue. Seems to happen frequently.