Move Vault Stores and Index to a new cluster in the same site

[O_Schmidt]

Hi,

at this time we have the following EV environment

Enterprise Vault 11.0.1
1x VM EV Journaling - Win2008R2
1x VM EV Mailbox, EV FSA - Win2008R2

Now i have installed a new windows cluster(Win2008R2) additionally and joined the cluster to the existing site.

I will migrate all vault stores and indexes which belongs to mailbox archiving to the new windows
cluster.

At this time we haven´t configured Index Server Groups. 
How can I migrate the index and the vault stores and change the indexer to the new cluster?
There are a lot of technotes like https://support.symantec.com/en_US/article.HOWTO82325.html 
or https://support.symantec.com/en_US/article.TECH47388.html.

I think that this instructions are ok, but how can I change the indexer from the migrated vault stores without using 
Index Server Groups?

[AndrewB]

are your Mailbox and FSA indexes comingled on that existing server? index server groups wont help. you might consider using move archive to transition the mailbox archives to your new EV server since it'll take care of the data and the indexes for you.