Hello @GyaniBaba,
you are not missing anything but perhaps this needs an explanation.
Up to 9.3, you could install (or should install) EG and Office Addon only through the SAS Depot.
Starting 9.4, SAS offers a new (and more standard) way to install some products, the standalone installs.
If you install "standalone", SAS won't deploy all "Deployment Manager" stuff, which makes impossible for SASHFADD tool to identify the status of the products, and that is why you will need to check the new updates from the tool itself, or some other ways.
If you would like to keep using SASHFADD, even for small EG or Office addon installations, you will need to run quiet installations with the full depot. Only then SASHFADD will be able to identify and install the hotfixes as required