I'm still on Illustrator CS and I am trying to edit an .ai file that I generated a couple of years ago. The original file was about 500K but after a few minor changes, when I saved it it was 6.8M! After messing around for a while, I opened another older file that was about 500K and just saved it with a different name. It's now 6.8 M! What is happening to me and my files!