You cannot import from the same version of Entourage. eg: Entourage X to
Entourage X or Entourage 2004 to Entourage 2004.
Entourage stores data in the Microsoft User Data folder. This folder is
located in your Documents folder. See
<
http://www.entourage.mvps.org/path/ent_db.html>
Problems happen when users move the MUD folder itself or folders inside to
another location. When this happens Entourage will create a new blank
Identity in the MUD or if needed, create an entirely new MUD folder. When
this occurs all mail seems to have disappeared.
Select Switch Identity and see if your old identity is still listed. Your
identity is named "Main" by default.
To find your old database, search for "Microsoft User Data" (without the
quotes). More info here
<
http://www.entourage.mvps.org/faq_topic/identities.html#id2>
Let us know if this helps.