How to clone a VM - duplicated SID

Hello,

I have been searching on the web for a guide or manual how to clone a VM in HYPER V3 (windows 2012 r2) 

I have found out that it can be done via export / import or  clone or copy and pase the VM folder. 

I am working in an environment with Hyper v3. We want to clone some machines that are in production in a Windows Active Directory Domain.

The most easy way would be shut down the VM. Export and import to create a new VM but what about the Computer SID, the AD account? Is there any guide with the right instructions how to complete the clone process and avoid any conflicts (like SID duplications) Is sysprep still needed?

Thanks in advance!

Regards