Powerpath upgrade with SVM disksets

Hi all
I am running the following hardware:
2 SUN Solaris 10 machines
They are connected to EMC clarion LUNs
We are running a Sun Cluster 3.2 managing both nodes
We are using Solaris Volume Manager to handle the shared storage for the cluster. It is using a number of named disk sets that is shared among both hosts.

Now the situation is as follows:
We are upgrading the storage from Clarion to VMax. The storage admin will handle data replication so that the new luns are exactly the same. The only problem at hand is that the PowerPath software will be updated which means that the luns will have new IDs.
I need to change the hardware IDs of the diskset disks to reflect the new hardware address provided that they still have their same DID.
How can i do that? can i edit some file and change the hardware address or should i attach the new disk and remove the old one? and if so how can i retain the same DID?
thanks a lot in advance