When creating a patch project for an update does it determine what has changed or do I need to remove everything from the new project that I do not want to overwrite on the update? Example is the original install adds an access database. I do not want to overwrite this on subsequent updates.
A patch contain only the diffs between two versions of a package. When a patch is applied only new files are added and requires the previous version of the package to be installed. Read more about patch here: http://www.advancedinstaller.com/user-g ... tches.html