is it surface editing or template editing ?

Hello James, I understand this plugin enables me to rename CPTs which might conflict with other plugins. That’s just what I need, but since I’m a newbie in WordPress I have some doubts which I hope you could clarify before I install this Editor.
I thought that I could hack my theme in order to change CPTs but sadly discovered that there are templates with many calls to the CPTs. Your Editor might save me from hiring a developer, but how does it work: does it modify all templates tags/calls, or it creates a redirect from CPT oldname to newname? Does it change something in the database? Also, is the “reset all” feature really putting things back to normal?
I’d appreciate your advice.