Originally Posted by
Lux Flyer
...Case 2 it had to combine the two certificates to create one with enough value, and then deducted from that new certificate. Probably an oversight in the combination process that takes the passenger information to put on the combined certificate instead of the existing certificate information.
That possibility occurred to me, but nowadays, combining FFCs and ETCs are not necessary. So that might have happen years ago. I think we are both stating, that was not a standard outcome and doubtful it would reoccur,