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Before redeploy the HA-Pro environment
1. Make sure all licenses of Device 2 are transferred to Device 1 from
myzyxel.com before Device 2 deliver to RMA
2. Confirm the Serial Number of Device 1 is entered on HA-Pro page.
Go to Configuration> Device HA>Device HA-Pro
3. Click the Service License on Device 1 Refresh button to check license
update correctly from myzyxel.com