I have a drawing that the location labels are showing the incorrect zone designators on the child views. Zones have been properly set up with correct margins in the sheet format properties, and it is only isolated to this sheet. I've deleted the labels, moved views, tried everything I can think of to no avail. We are still using SW 2015 SP5.
We have opted for the split square labels, since the split circle labels look entirely too much like datum targets.