Wix 'Advanced' Installation does not uninstall previous version?

It sounds like you are running into the same limitation as I did, see this question . You cannot change the install scope ("per user" or "per machine") in an upgrade.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.