anonymous user
Moving Virtual Desktop to another subscription in the same region is supported. You can view the full list of supported migrations here. The guide to resource migration can be found [here][2].
You can also migrate Windows VMs independently. You could then create a new host pool and associate them to that host poo using the reg key. View this past thread for more details on this.
I agree that moving the majority of resource group is probably the best path but wanted to outline some other options.
Hope this helps. Let us know if you still have questions!
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[2]: https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/move-resource-group-and- subscription