What happens if I change the portal associated to my Zoho CRM account?

What happens if I change the portal associated to my Zoho CRM account?

A portal associated to your CRM account can be changed by a CRM user with administrative privileges.

However the integration stops working on changing the portal. If you are changing the portal owner or regenerating the ZSC Key for security reasons, you must update the ZSC Key for the integration to resume working.
See AlsoUpdate ZSC Key.