Database Wizard - Re-linking shapes

Hi.
I've created a drawing in Visio 2003 which links shapes in the document
stencil to linked data tables in an Access database that are managed
separately. Each shape has its own table. Recently, the original database
files have changed and I've been trying to update the Access database to link
to the new tables and re-point the Database wizard to link the shapes in the
Visio drawing to the new tables (the names changed). After going through the
updates, only some of the shapes in the drawings will update with the
document stencil master and look to access the new database table while
others still look for the old files. Any ideas how to correct this? Thank
you.