Hyper-V - Move VM from 2012 R2 to older OS and back

Hi guys,

Can find lots of info on moving to an upgraded OS but nothing for moving backwards. I've a VMware background so not sure how this will work.

I want to move some VM's from a 2012 R2 host to either a 2008 R2 or 2012 host. Then move them back.
VMs are on a volume presented via ISCSI.
Can I just present the volume to the older host and import the VM?
Then do the same to move it back later?

Just worried about corrupting the VMs etc.

Appreciate some direction, thanks.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
If the VHD format is VHDX then you cannot move them to a 2008 R2 or earlier system since that doesn't support the VHDX disk format (>2TB).

If you move it between OS host versions, I would UNINSTALL the Integration Tools FIRST and generally, I wouldn't recommend doing this at all.  While it SHOULD work, why wouldn't you want your hosts to be running the same version?  Even if it's a licensing issue, it doesn't have to be.  The hosts can use Hyper-V Server 2012 R2 which is GUI-less but FREE.
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Admin LaffAuthor Commented:
Thanks mate.

I wish it was just a case of upgrading some hosts. I work in managed services and this is for a new customer. To upgrade means projects fees and signoff when all I want to do is get some VMs onto another host while I get to work on their original host during office hours.

Appreciate advise
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