Temporary support bundles are not deleted after successful upload to Amazon.
When Information Gathering Tool collects support information and creates a temp data file, it should be deleted after the file has successfully been uploaded to Amazon. In some environments this does not occur and 7Z Files will start accumulate at C:\Users\UserName\AppData\Local\Temp.
Normally this will not affect server core operations unless you run numerous or large support information bundles. If you think you are loosing space due to this issue, simply:
This defect should be addressed in the next release