Hi, welcome!
It looks like your change of Irish N numbered roads to highway=secondary goes against the standard way of mapping N roads in Ireland agreed by the community.
I undid your changes to N roads in this area to restore the road type to what it was before.
Please check the OSM Wiki for the agreed tagging. See " Primary Routes" and "National Secondary Routes" on this page: https://wiki.openstreetmap.org/wiki/Ireland/Roads
Hope that makes sense.