I am creating a upgrade MSI (wix 3.5) in order to create some patch on top of main install.
I am try to use CopyFiles tag (msi extension 1.3 beta) inorder to take a backup of files before copying new files from upgrade MSI.
It taking backup of all the files but it looks it takes the backup after copying the new files from Wix upgrade. I need to take a backup of files before copying from wix. So that i can use them for un installation.
Is this possible, please let me know?
<AppSecInc:CopyFiles Id="CopyAll" CopyOnInstall="yes" Recurse="yes" Source="[MergeRedirectFolder]" Overwrite="yes" Target="[MergeRedirectFolder]\Backup" Wildcard="*.*" />
Also is there is any way we can take backup only the files which are copying in upgrade msi.