Failed Insert Query

Hi

I'm trying to port some data from one database table to another
database table on the same server.

This is the query I am using:

----->
INSERT into newdatabase.dbo.contactevents (EventTypeID, UserID,
ContactID, DateEntered, EventDate, Description)
select '20','1', ContactID, '1/1/2005 00:00', '1/1/2005 00:00',
ISNULL(Notes,'')
from olddatabase.dbo.contactevents
WHERE Exists (SELECT ContactID FROM newdatabase.dbo.contacts)
<-------

This is the error I'm getting:

----->
INSERT statement conflicted with COLUMN FOREIGN KEY constraint
'FK_ContactEvents_Contacts'. The conflict occurred in database
'newdatabase', table 'Contacts', column 'ContactID'.
The statement has been terminated.
<-------

There is a relationship between the contacts table (Primary key
ContactID) and the contactsevent (foreign key ContactID) table. I guess
the error being flagged up here is that some contacts don't exist in
the new database, therefore referential intergretory won't allow it
being copied. I thought I could get around this using:
"WHERE Exists (SELECT ContactID FROM newdatabase.dbo.contacts)"
Note I've also tried:
"WHERE Exists (SELECT * FROM newdatabase.dbo.contacts)"

What am I doing wrong?

Many Thanks!

Alex