Is the migration really as simple as what is listed in this guide or are there steps missing?
I'm getting some conflicting information about some extra steps that are needed and not in that guide.
What are they saying is extra?
Start with SW1 then SW2 (link says to start with SW2 first).
Disable cluster LIF autorevert (Link says to make sure autorevert is enabled)
Migrate cluster LIFs to the other switch (Link doesn't make any mention of that)
Bring up ISLs then move cables (link says to move cables then bring up ISLs)
After both switches have been replaced, remove all 4 ISL cables and then install the two new ISL cables between ports 55 and 56