We use AutoCAD 2011 with the FlexNet License Server. The License Server is a Windows Server 2012R2 VM running on Hyper-V.
We are migrating our VMs from Microsoft Hyper-V to another hypervisor, EuroNAS eeVOS. The export from Hyper-V went without issue and the import into the new environment went without a glitch. All shares are the same. All drive letters internally are the same.
Originally, JMR-Project used to be a physical box, which I virtualized. The virtualization went without a hitch however long ago and all our users can access AutoCAD. No changes on the client were necessary from the physical box to the VM on Hyper-V. The computer names were kept the same.
I exported the AutoCAD FlexNet VM from Hyper-V and we imported the VM into EuroNAS eeVOS. That went without a hitch. All shares and drive letters are identical. I removed both VMs from the AD trust and added in the new VM to our AD domain.
The new VM appears fine, just I cannot get AutoCAD users to recognize the license server, even though the name is the same. Client computers got rebooted and the DNS cache emptied. The client computers can definitely ping the new license server VM. Opening File Explorer and going to the share works perfectly, so DNS cache is definitely not the issue. The license server uses the computer name, not IP address. Do not forget the original virtualization went without a hitch, which meant a new MAC address and new IP.
If I go through the process to switch back to the virtual machine on Hyper-V (remove both units from trust, shut down on EuroNAS eeVOS, and put the old VM back into the JMR AD trust), then the clients are fine. I went through the process several times now. I have looked at LMTools.exe and everything looks fine. The FlexNet License Service runs (Computer Management -> Services).