After the discussion about base prices link in IN-B, I'm thinking it would be nice to be able to go directly to the routing screen after editing an item in IN-B. Maybe a button could be added for that also. I know there is one in IN-A so maybe the same would work for IN-B.
 
Routings are usually the next step in entering a new item or changing an existing one, so it would seem logical.

And... And... And..  OK, we get it...