Hi Nathan_A_RF,  When I made the edit I was referring to the Wiki: https://wiki.openstreetmap.org/wiki/Dual_carriageway  and specifically to the exception “If a road contains any of the non-appropriate elements for some short distance, but is still separated by a physical obstructions along other parts of the road in the vast majority of its length, then the road can continue to exist as a dual carriageway for the moment.”.  I assessed that the way I changed fell into this exception.  Would you share with me under what circumstances you see that this exception would apply so that I can take that into consideration in future.  Thank you