Hi,
I have done this and it work.
But you need some (Offline) time.
As I renember:
Data stays, but Software Configuration is lost.
You have to configure MSA Name and IP, ect. and all Presentation.
So notice all Config.
And the Server MPIO Name changes from "HP P2" to "HP MSA 2040 SAN ".
You have to reconfig and reboot the atached Server.
Read the "Upgrading to the HPE MSA 1040 or HPE MSA 2040/2042" Paper.