Im coming into a project where a edit was made to the core of cb I believe and I cant figure out were this change was made. I already did a update to this system installed the new version of joomla and cb. I am under the impression that cb takes over all user registration once installed thats why by default in the joomla main configuration its turned off and the url for the registration page says comprofiler. My question is where is it likely this person made these changes?

Don't believe you, but don't worry about it. Figured it out.