system
5
On the new server setup the Avast services again.
Then on the old server on the container propperties give the new IP address from the new server. Let them run together for a while so all clients get a chance to get the new policies. Then decommision the old server if all if moved.
If there are clients that dont function propperly, redeploy those.
Thats how i did it in the past, essential is to be able to have both machines running along sides for a period of time.