I've a query around RP4VMs and version compatibility on vSphere.

I'm doing a customer migration using RP4VMs to move from one site to another and need to know if the same version of RP4VMs must be deployed on the VMware hosts in the source/target sites.

e.g Is it possible to deploy RP on a vSphere 5.1 farm (source) and RP on a vSphere 6 (target) or must the ESXi version and RP version be the same level?

(new to EMC RP4VMs technology by the way)