Originally Posted by
Robt760
For this piece of the puzzle, the Rep I spoke to today stated that the dropped KTN is a “known issue” that was addressed and closed.
Does your KTN show in the PNR during OLCI? If it is present, have you tried removing the KTN, checking in and then checking in again adding the KTN? Have you confirmed there isn't a trailing blank on the KTN? Remember that any changes made to your KTN in your profile won't be reflected in the PNR as what is in the PNR is a snapshoot of your profile at the time you purchased the ticket.
Just some suggestions.
James