Certification tests AANP vs ANCC and CME

Hi all,
I am trying to decide which certification test to take. I know this has been discussed in other posts
but I have not seen anything on this subject.

I was told that if you have taken the AANP test, you cannot get Continuing education credits for preceptoring students.

So, does anyone know if this s true or what differences there are concerning this or other matters?

Hard enough trying to decide which test is better content-wise and time-wise, now here's another thing to worry about- oh well...

thanks