The Major Upgrade item reflects the Windows Installer 'Upgrade' table.It is used for customizing the major upgrade settings (e.g. if you want to upgrade a product with another upgrade code, or want to prevent upgrading from certain versions, or for ...
The 'must run setup.exe' is just a property value, it's not something you should refer to (the Windows Installer just logs all the defined Propeties, this one is the value of STANDARD_USE_SETUPEXE).You should have two MSI logs - one for the UI sequen...