I submitted my secondary via email attachment, and I was able to save it. However, you can only save it once. So if you try to come back and change something and save it again, it would not work. However, I do have a PC so that might make a difference. The first time I tried to email my secondary they could not open it because I tried to use the submit form button at the bottom. This button does not work correctly, and she said she would remove it off of future secondary applications. So since this did not work, I tried emailing it just as an email attachment, and she said it was fine. I CC'd myself as well, and I was able to open it from both my emails and all of my information was saved. So maybe if you're having trouble on a Mac, try using a PC and saving it by changing the file name with your last name, AMCAS ID, etc. Hope this helps!