Hi EkowYaw, thank you for trying to fix the route ref, unfortunately you changed the values of route relation https://wiki.openstreetmap.org/wiki/Relation:route . If a way is part of multiple routes and you can specify both refs using semi-colon as the separator see https://www.openstreetmap.org/way/475152362#map=15/5.4144/-0.794

This  changeset and following ones have changed the route ref from IR6 to IR8 and then to N10 including other tags, however this relation is IR6, I will proceed restore the correct details.  Happy mapping!