Procedure for changing IP address in Dell compellent

We have an requirement to change the management IP address of Dell compellent storage . Below is the draft procedure which i created

1.Login to Dell storage center & change the IP of the Controller slave first

2.Change the IP of  Controller ( leader) next

3.Change the management Virtual IP

4.Then make config changes at switch end ( network end)

I am not certain with this procedure, as the change in IP address of Controller will make the connectivity loss to management .Please clarify or let me know if you have any other procedure

Thanks
Saran