Headline Did Not Update

Hello!

Has anyone had an issue with a headline not updating? 

I often "copy" a previous email and then update the heading, photos, text and button links. I often change colors and themes to make the email appear fresh, but keep a consistent look and feel. 

Several times now I will update a headline, click "save", and send it to my list, only to find that the headline did not update. 

Looking forward to hearing from the CC community!

Drew