I'm still newbie with Wix and exploring it! I had made a installer "abc.msi" which is working fine. After installing the abc.msi I go to folder and update my configuration file say it ".env" manually with respect to servers. Now when I update the installer and installs the new "abc.msi" the ".env" gets overridden with new values.
What I'm looking for ".env" shouldn't get removed and updated newly. It should restore the value which I've updated manually plus should get the new values from the installer.