Netapp snapmirror question

hello , 

We 're going to perform a DR test for the customer . The Production will be up during the test and customer would be bringing up the  servers at the DR to test . 

I am new to netapp so want to clarify the steps : at DR>

Break the Replication Mirrors

Create the igroup:

Once the luns are mapped, scan the ESX servers for the presented luns and proceed with VM recovery.

I am refering  to an Old document that was prepared an year back and the document doesn't mention quiesceing . My question is whether  its not necessary to quiesce the replication prior to breaking it in this scenario?

Thanks !