KMs wont give you what you want unless you’re using different client keys for the products concerned (as you already found out). However, doing a quick search with (you knew this was coming!) :google:, I found this blog:
Have a read through the answers, there are several quoted, even a powershell script that generates reports and saves them. Or better yet, from the same search I also found a complete PS script with Help included, ready to download, here:
The page has a Description section to explain some things, and a Q&A section which you may also find helpful.