The 12/20 realignment project is complete. US 12 now intersects US 20 at a new intersection just east of Lake St. The corresponding US20_A waypoint should move to this intersection from its current location just west of Clay Street.
Routing of US 20 is unchanged, though the US12_A waypoint would need to move to the new intersection. I'd also recommend a waypoint at Lake Street for US 12/20.