We have completed migration of mailboxes from the old Exchange 2003 server to the new Exchange 2010 store.
In order to 'migrate' the Public Folders we have used the following commands to create a Public Folder structure in 2010, replicate the folders (mainly/99% calendar items) onto the new 2010 Public Folder store and (after leaving it in place for the weekend) used the migration script to remove the replication from the old server.
As a test today, I dismounted the old PF store and tried opening the Public Folders in Outlook but get an error that they are unreachable. It seems that the PFs are still being accessed by clients via the Exchange 2003 PF store. I have also noticed that while the majority of PFs no longer appear on Exchange 2003, there are still two calendar Public Folders mentioned there (despite no replication being in place any longer).
I'm not clear on what I should be looking to do next to ensure that the old 2003 server is no longer relevant?
[PS] C:\Windows\system32>cd 'C:\Program Files\Microsoft\Exchange Server\V14\Scripts'
[PS] C:\Program Files\Microsoft\Exchange Server\V14\Scripts>Get-PublicFolder -Recurse | fl Name, Replicas
Name : IPM_SUBTREE
Replicas : {}
Name : Handling Schedule
Replicas : {EX2003SRV\First Storage Group\Public Folder Store (EX2003SRV), Public Folder Database Thornton}
Name : Decoder Calendar
Replicas : {EX2003SRV\First Storage Group\Public Folder Store (EX2003SRV), Public Folder Database Thornton}
[PS] C:\Program Files\Microsoft\Exchange Server\V14\Scripts>.\AddReplicaToPFRecursive.ps1 -server "EX2010SRV" -TopPublicFolder "\" -ServerToAdd "EX2010SRV"
*********WAIT FOR REPLICATION TO COMPLETE*****************
[PS] C:\Program Files\Microsoft\Exchange Server\V14\Scripts>.\MoveAllReplicas.ps1 -Server "EX2003SRV" -NewServer "EX2010SRV"
*********WAIT FOR REPLICATION TO COMPLETE*****************
[PS] C:\Program Files\Microsoft\Exchange Server\V14\Scripts>Get-PublicFolder -Recurse | fl Name, Replicas
Name : IPM_SUBTREE
Replicas : {}
Name : Handling Schedule
Replicas : {Public Folder Database Thornton}
Name : Decoder Calendar
Replicas : {Public Folder Database Thornton}
[PS] C:\Program Files\Microsoft\Exchange Server\V14\Scripts>Get-PublicFolderStatistics