Q. Do we need to rename all master shells to template?
Either a year or 1.5 years ago we made the transistion in the naming convention from the term "Master" to the term "Template". All new Templates/Template Shells made from that time forward should have been named with the term "Template". As I encounter any other Templates, I would change the name to reflect this change. I thought at the time, I had also asked any one who worked with Template to make those changes as well.
So, yes, if you interact with a Template and need to make any change, then please take the extra 5 minutes to change any reference of "Master" to "Template".