From Mikhail:
 
We have this KCS Article: https://access.redhat.com/solutions/5354651. The article describes how to migrate data between PVs for AMQ7 Broker on OpenShift. 
 
It lacks 2 things:
 
1) Migrating data from one broker to another
 
That requires specially named target
 
2) Migrating data between differently named SS's
 
So it kind of makes sense to create a doc page on "renaming stateful set"