In theory it's that simple, but in practice there are many possible pain points 
in a major upgrade.  It mostly depends on where you sequence 
RemoveExistingProducts and whether the upstream build process properly 
versioned all of the files that the install is consuming.   Garbage into the 
costing process is garbage out during the installation process.
  

John Lalande <[EMAIL PROTECTED]> wrote:
  ab

It is much simpler then what you are proposing.  Simply add the UpgadeCode of 
the old product to the Upgrade table of your new product.  The old one will be 
uninstalled in the same manner as a previous version...silently during the 
RemoveExistingProducts action. 

John
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