PowerPath/VE virtual appliance upgrade / new install

I am wondering if anyone can help me w/some questions I have re: an upgrade or migration path.

We are planning on installing the PPVE virtual appliance in our environment, which is an "upgrade" from our current environment which is running a served license model running on a virtualized windows server. I don't believe there is a direct upgrade path from our current enviroment, so I am planning on bringing up the virtual appliance and transitioning my hosts to the new license server, etc...

I have some questions about this process that I can't seem to find documentation on;

•   What will happen to the PPVE licenses on the hosts already registered to the existing license server?
  • Will existing hosts have to re-register w/the new license server?
• How are licenses transferred to new license server in a served license model?
• Is there a simpler process to transition to the PPVE licensing Virtual appliance than the one I am attempting?

Any help is appreciated,

Thank you