Dear users,
Around ovirt 4.2.2 after a bug I had switch to nightly from stable. Its was do applied only on the engine, not compute nodes. 
But now I would like to switch back to stable branch.
How is safe that? I just need do remove the nightly repo and update? Need to apply a yum update * before or not? 

Please describe me what is the safe procedure.
Thanks in advance,
Regards,
Tibor