Floating Rate Tranches (Optional)

Do optional sections of the CFAI curriculum have a consistent trend in showing up on the actual exam?

Example, you guys think Floating-Rate Tranches, Structured IO Tranches, etc., will show up?

Well if you finished every mock exams and really cannot find other things to do, then why not?

Just saying you won’t fail if you miss this since they already told you it’s optional…i bet everyone is having difficulty too if this shit really spring up in the exam…