Licence management and new Veeam backup server

[Frosty]

Having bought ourselves a shiny new physical backup server, I'm preparing to move Veeam from the old to the new.
I have read several KB articles and have a reasonable understanding of the process.
What isn't yet clear to me is precisely how the licensing of Veeam will work during the changeover.
CURRENTLY -- licensed for 6 CPUs on 3 x vSphere ESXi hosts
FUTURE -- we will be needing only 4 CPUs on 2 x HyperV hosts
How do I get there from here without violating terms of software licensing?

[Frosty]

I suppose it might go something like:
* stand up new Veeam server with 3 x vSphere ESXi hosts and then stabilise
* move all VMs off one ESXi host and remove that host from Veeam
* add one HyperV host to Veeam
* migrate some VMs from ESXi to HyperV
* remove another ESXi host and add the 2nd HyperV
etc

[Mildur]

Hi Frosty

Yes, you can do that. But removing the host is not required. Revoking license from the old host will be sufficient. Make sure that you are not protecting any VM on an ESXi host and you can revoke the license from this host.

Or ask your regional Veeam representative for a temporary license to cover workloads on all 5 hosts during migration. The second option makes only sense if you are expecting a longer migration period and needs approval from your local Veeam team.

Best,
Fabian