BPP Textbooks ordered in 2005

System

Hi! i was just wondering if anyone knows whether i can still use the textbooks that i ordered in 2005 for unit 17 Implementing Auditing Procedures, as when i ordered them from bpp, I bought the whole unit to save some money, and I am only coming up to this unit now.

Do you think the information would be out of date or whether bpp have changed the format much? Any suggestions would be greatly appreciated!

Thanks

Lisa xxx