I had an issue today when looking at what i want to unlearn to put points other places. Got this messaging:

>cman unlearn cdefense
You have chosen to unlearn rank 5 of Cunning Defense to regain 9 training points. If this is acceptable, please use CMAN UNLEARN CONFIRM within the next 30 seconds to confirm your training choice. If it is not acceptable, please use CMAN UNLEARN CANCEL and try again.
* Unlearning CMP from this skill is currently instantaneous. *

So i decided to unlearn it since it would instantly put those 9 points in to my bucket. Problem is it didn't happen and now i am unlearning those 9 cman points. just a warning if anyone else sees this messaging. I've bugged it and am awaiting a referral for the points or rank back.