Changing public key algorithm of a CA certificate

Hi there,

Is it possible to change the Public Key Algorithm of a CA during the certificate renewal process? It's documented that changing the Hash Algorithm is possible via the CNGHashAlgorithm registry key (assuming usage of the CNG provider), however, there's effectively nothing out there on changing the Public Key Algorithm. Presumably, this would be done by modifying the CNGPublicKeyAlgorithm key alongside the CNGHashAlgorithm key (where necessary), but I'd like to get the thoughts of others before attempting this as to if this is likely to work and the ramifications it may have.

Cheers!