Attribute check-for-live-server must set on live server to faillback

When there is live/backup pair with replicated journal then it should be sufficient to set attribute "check-for-live-server" in messaging subsystem only on backup to force backup server to shutdown when live server comes alive again. Problem is this won't happen.
Only when attribute "check-for-live-server" is set on live server then failback is successful (backup shutdown itself)

It's not well documented where "check-for-live-server" should be set in HornetQ project documentation:
http://docs.jboss.org/hornetq/2.3.0.CR1/docs/user-manual/html_single/index.html#ha.allow-fail-back

This issue was hit with EAP 6.1.0.DR2 (HQ 2.3.0.CR1).