I have created a large number of new contacts (address cards) that 3 other
colleagues are trying to import in order to update their Outlook  Contacts
with the same information.  

From my end, I have exported the Contacts folderwith "Comma Separated
Values" to a location that the others have access to.  They have tried to
import that updated version and although all of the icons show that the
process took place...when they go into their COntacts folder no changes
(updates) have actually occured.  We have done it this way in the past and it
has worked, but this time it is not.  I also tried exporting the Contacts
folder using a".pst" estension, tab separated..., etc. and neither of those
worked either.  Any suggestions?