I'm creating a new InstallShield Developer 7 package for an app that was previously packaged by someone else using InstallShield Professional 6.X. I decided to start from scratch and create a new ISDev7 project. I want my package to always uninstall any installed version of the application before installing the new version. From what I have read, that means that my package must use the same upgrade code as the previously-released package.
I do have both ISDev7 and ISPro6 and I have the ISDev6 project that I am replacing.
Thanks.