SVM Domain migrations and domain-tunnel

[tough vortex]

I'm working on some runbooks so we can migrate our older SVMs from Domain A to Domain B. We have a dedicated SVM that is just used as the domain tunnel for AD authentication for cluster/svm management.

When we migrate that particular SVM, will I need to do anything special (ie deleting and recreating the domain tunnel or simply doing a domain tunnel modify) or just leave it alone as it should automagically sort it self out when the SVM is joined to the new domain?

As a follow up there is an AD trust between Domain A and Domain B, with accounts from both domains for cluster/svm management, but Domain A is going away.