CP server version for 2 differents SFHA version

Hello,

I've got 2 clusters under RHEL6.3 using SFHA 6.0.30

they are connected to a Cordinate Point server 6.0.30

I want to install 2 new clusters under RHEL6.6 using SFHA 6.2.1

My questions :

Can my 4 clusters uses the sames CP server ?

If yes, do I need to upgrade the CP server ? in which version ?

thanks

Cedric