Thanks Claudius H.   You're correct in what you say - I've figured out who has added the 'new' name.   I asked because a couple of decades ago, Stratford High-Level and Stratford Low-Level were the correct names for (effecifvely) two different stations at this site.   So the user mighthave been working from an old source.   As you say, confusion is unlikley because the names don't actually appear anywhere humans might see them.