windows – Downgrade from 2019 standard to 2019 essentials

We have a physical server in a datacenter. It is running Server 2016 Standard. We created a virtual server with Hyper-V as 2019 Essentials. The datacenter staff authenticated the VM using one of the 2 free virtual machines allowed with a standard license. Somehow, during the authentication, the version was upgraded to 2019 standard. Is there any way other than setting up another VM as essentials and have the datacenter transfer the license? We would rather use essentials for the 25 cals that come with it.

I have found various conflicting articles and I was hoping someone on this forum would have encountered this or a similar situation.