@jprause, your procedure was about copying old "C" VM's data to new "D" VM instances. If this is only supported/working procedure then I will do it.
But I am looking for instruction to do in-place upgrade on the same C VM to newer version of miq.
I really like gitlab-ce(another rail+postgres DB app) upgrade procedure.
All I have to do is "yum update gitlab-ce -y" when newer version of gitlab-ce is available.