Moving groups

I have a several groups called things like:

DC1 - Storage

DC1 - Network

DC1 - Compute

...

Adding a second data center and I would like to create a parent group called DC1 and put all of these existing groups underneath.  I don't see how to do that unless I create the DC1 group and then recreate all the children.  Is there a way to move existing groups around?


Thanks,

Jon