Cloner or Snapshot with Multi-DB to move Network and sub-sites?

Hi,

I created a new Network on a new domain. I'm trying to move the main site and sub-sites to the new Network from an old Network on another domain. The old main site will be a new sub-site on the new Network. Both Networks use the Multi-DB plugin. What is the best way to accomplish this task? I've been trying to use Snapshot, but can't get it to work.

Thanks!
Chuck S.