I have a question regarding managing the directories and files that are uploaded to the content-repo area.

In my example I have uploaded the Office 2007 directory to the ZCM server and the installation is running perfectly. Now if I wanted to modify the content of those files (eg add the latest sp msp file to it) what is the correct way of managing that existing data?

I understand that simply uploading the single file and deploying it is an option as is uploading the entire folder again and deleting the previous directory install task but what happens to that previously uploaded data? does that get deleted automatically? am I missing some important 'data management' page somewhere that shows what data is uploaded from all the bundles?