Whenever I build something (like roads) right near the edges of the map, the landscape is modified to a configuration that doesn't match the neighboring side. SimCity asks to reconcile edges, but the operation is extremely destructive, blowing up many things that have been built near the edges and even highway cloverleaf interchanges elsewhere on the map.
I can't see any problems if I just refuse to reconcile the edges. Are there any benefits to letting it do so?