Thanks for the link. It was great for concepts but fell short of an actual command line I was looking for. I think I might have stumbled over a process here:
1. Run MoveAllReplicas PS script to set the replicas from EX2K7-1 to EX2K7-2.
2. Turn up repilcation logging and/or wait minutes, hours, days (we waited at least a week to be extra safe)
3. Run the following command on the destination server to check out the origin server:
Get-PublicFolder -Recurse | Format-Table Name, OriginatingServer
4. Run the following command on the destination server to check out the item count:
Get-PublicFolder -Recurse | Get-PublicFolderStatistics
5. Run the previous command on the source server to see that folders don't exist on that server.
And I believe that is all based on the advice in the link that we should watch item counts. I would appreciate any pointers if there is anything else that we may have missed.