It's always great to get some insight from the actual heroes of the play. I don't know how many people associate MK with your MK1 guitar, John. People are constantly, "Ah, Knopfler's guitar is that yellow one, right?". And I be like, "No, he plays Strats, Les Pauls nowadays, etc.". But people loved that MK1 guitar!
Here's an insight from me. As a kid I remember watching "On The Night" concert and I thought that this particular guitar is the best guitar in the world, period. I sort of grew up with a picture of this guitar in my head and it's probably the only superstrat that I really like.
With that being said, dropping of the name and altering the history is some serious s*** whatever might be the cause.
But I'm sure we will get the answers sooner or later.