Save vs. Save as in End Point Manager

When you save a config in End Point Manager you have the following options. The first option is Save which saves to the local hard drive. I don’t quite understand what this means or where the file is saved. Can anyone clearify exactly what this means?

(Note: 'Save' Saves to the local hard drive, if the phone module is ever updated this file will be over-written, 'Save As' Saves to the database and is not over-written on updates)

/var/www/html/admin/modules/_ep_phone_modules/endpoint/*

Meaning it saves on top of the original hard drive based template. Save As saves to the database in mysql.