This article provides steps to move an ESX/ESXi host with vSphere Distributed Switch from one vCenter Server to another.

1. Back up the vSphere Distributed Switch configuration. For more information, see Exporting/importing/restoring Distributed Switch configs using vSphere Web client (2034602).
2. Create a Standard Switch for the virtual machine, VMkernel, and Service Console port group depending on the environment on the ESX host you are migrating.
3. Move the ESX host to the Standard Switch you created in Step 2 and disable vSphere Distributed Switch on the ESX host you are migrating. For more information, see Disabling vNetwork Distributed Switches (1010718).
4. Check if the vCenter Server cluster is configured with EVC or not. If the destination vCenter Server is configured with EVC, all virtual machines must be powered off while adding the host to new vCenter Server.
5. Remove the ESX host from the cluster and add it to the new vCenter Server.
6. Create distributed switches in the new vCenter Server.
   
   Note: To import vSphere Distributed Switch configuration from the backup created in Step 1, see Exporting/importing/restoring Distributed Switch configs using vSphere Web Client (2034602).
   
   
7. Migrate the new host networking from Standard Switch to vSphere Distributed Switch. For more information, see Migrating Service Console and/or VMkernel port from Standard Switches to Distributed Switch (1010614) and Migrating virtual machines between vSwitch or PortGroups to vDS or dvPortgroups (1010612).

For related information, see How to move ESXi/ESX host from one vCenter Server to another (1004775)
How to move ESXi/ESX host from one vCenter Server to another
Exporting/importing/restoring Distributed Switch configs using vSphere Web Client