Yes he has to uncheck the layers he does not want to save in that pdn and it will ask him to flatten if he has more than one. He did say each individual layer so he shouldn't have any others checked for the pdn he wants to save.
butterfly
I like those red shoes the best of the pictures you have placed in your gallery. They look like they are made for flying. If you can guess by my login name I like things that fly.
butterfly