I have an install shield project that has gone through various versions, currently it is version 3.7. There is a component in the project that contains four vdb files, which are set to always overwrite. When installing the software on a fresh machine it works fine. The four files are copied in to the target dir. If I perform an upgrade on a previous version say 3.6 the files are ignored and the contents of the dir are unchanged (previously contained 2 files).
I have also set the Reinstallmode to amus.
Are there any other methods of ensuring that the files are overwritten / component deployed?
Thank you