Issue: Unable to move user from Lync Server 2013 to Lync Server 2010 pool.
Error: Move-CsUser : Move to or from the future version of the product is not supported.
If you user is hosted on Lync Server 2013 pool and if you are moving user to Lync Server 2010 pool using Lync 2010 Management Shell then you will see above error.
You cannot move user using lower version power shell.
Go to Lync Server 2013 and open Lync Server Management Shell.
Type below command.
Move-CSUser –Identity “Username” –Target “Type target Lync server pool FQDN here”
Type Y to process further and wait for couple of second to execute command.
Your user now move to Lower version Lync Pool server.