There doesn't seem to be anywhere online I can figure out about the KM number.
Two of the five reverse proofs have been entered. Kennedy and Reagan. On those no KM numbers are given so I don't know if the reverse has the same as the regular or not.
Still Truman, Eisenhower and Johnson need the reverse proof entered.
It's embarrassing for it to say the list has been validated and now is locked beause any further changes must certainly be wrong. It's definitely incomplete so it cannot have been validated as claimed. Furthermore the suggestion of what to do in this case (post in the forum) does not seem to work, I posted weeks ago and nobody cared. So there's something wrong with the system.