Read  File Versioning Rules
<https://msdn.microsoft.com/en-us/library/aa368599%28v=vs.85%29.aspx>   on
how Windows Installer decides to overwrite files, and follow Minor Upgrades
or Small Updates rules - read  Patching and Upgrades
<https://msdn.microsoft.com/en-us/library/aa370579(v=vs.85).aspx>   to make
sure that fits your update scenario.

If it doesn't match then you can use major upgardes with late removal of the
existing product - read  RemoveExistingProducts
<https://msdn.microsoft.com/en-us/library/aa371197%28v=vs.85%29.aspx>  .



-----
Nir Bar 
Freelance Developer 
Mail: nir....@panel-sw.com 
Web: www.panel-sw.com 
   - C++ On Windows, Linux and Embedded Platforms 
   - WiX & InstallShield 
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