I believe they are no longer doing this. I was also told while I was at Bethel in the late 2000's that the CO arrangement would be no more and that the GB wanted local elders to serve as mini-COs within cities where they would visit nearby congregations and help them for a week, which was why there were so many elder schools being held at that time so that they could receive the training for this in the United States. However, I never thought they would get rid of DOs, and with the removal of the DO arrangement I am pretty sure you'll never see the COs go away now as they are now the only HQ representative the congregations will see (other than Bethel speakers at one assembly a year or at a regional convention). It seems like once Jaracz & Barr died everything went 180 degrees in the opposite direction.