Remove old VCCenter and Composer Server?

Hi,

I migrated our co-installed composer and vcenter server to a new machine while at the same time updating to the latest version.  My problem is the desktop pools are still being controlled by the old vcenter and vcomposer server and I cannot seem to transfer ownership of them to the new server.  Is there a way to do this?  I don't see a cmdlet for updating a pools vcenter and vcomposer in the view powercli.  Any info would be helpful.

Thanks