Mechanic in the Core Rules and Mechanical Engineering in the BSG rules have the same specialties, so I didn't think it would be too much of a problem to leave the description intact (since in the BSG setting, most of the engineering that happens is for ships, but the core rules are more generic). See this thread:
http://forums.wolflair.com/showthread.php?t=8822 for how to rename things within the files.