Flatten a articulate zip file?

Hi, I'm making an e-learning program, which I have to upload to our LMS system. I have heard that the end-file tent to get very big when using Power Point, because I make slides and delete them again, and they don't "really" get deleted. I have heard they kind of hide in the bag. Is there a  way to flatten the end e-learning file? I use studio by the way.

Thanks