[SunHELP] making UID's match between boxes

Hi I want to make the UID's for a particular user match between boxes. If I
change
the UID in /etc/passwd then every file that the users owns will now reflect
the 
owner's previous UID.  I belive I can resolve this with:

find ${workdir} -user ${olduid} -exec chown ${the_owner}:${the_group} {} \;

Does anyone know of anything more to consider?  This user owns a large
amount of 
files.