Moving from 2008 R2 CA to 2016

I’ve been reading articles online how to migrate CA. They all follow same format, backup CA, remove role, install new CA, import database, registry keys… This is all great except I cannot backup CA, I am receiving error where private key cannot be exported. So from my understanding I would have to …

Windows 2008 VPS via Moving from 2008 R2 CA to 2016.