Made an update to an access list (advertising a new subnet out all interfaces) and all but 1 router received the update. The configs look to be identical so not sure why this one router is not updating it's routing table. When you do "sh ip eigrp traffic" the router in question is getting updates, hellos, etc.. When I do "sh ip route x.x.x.x." the response back is "subnet not in table".
try to restart that specific EIGRP adjacency if it is on a dedicated link by shutting down and then up the link on the core side
Hope to help