Thanks for the info. Unfortunately I 've done it, and the old file was
inaccessible at all.
Outlook hang up when try to access it again.

I solved reopening all 350 contact and pressing save and close.
This created a new "internal" index and now the search work fine.

I guess MS will improve this export functionality. They lost the 2007
train ... and from what I heard Outlook suffer of this from a long
time.

Andrea