Hello! Why is the L'Enfant Plaza mapped as two different nodes? All similar cases I've seen, the station is mapped with a single node (since it is a single entity). I understand that the station has two different railway:refs because of the different levels, but I believe there is a better way to express those railway:refs without needing two separate station nodes. E.g., you could create two new relations to group the correct stop_positions with the corresponding refs.

I know this issue probably existed before your changeset, but I don't know where else I could ask/debate this.