I'm suspecting that they don't 'officially' link an never-used ticket until you enter the park with it on your band.
I entered 2nd tickets (already partially used) each for DH and DGrD so they would have enough days available to make FP+. Under their names on MDEx both tickets now show up for each of them.
I entered my AP which only has one day left on it - the day I arrive- and I was only able to make 1 day of FP+s.
I entered a 2nd never used 10 day ticket under my name and it shows up under my Reservations as not yet used. When I click into the tickets area where they come up as little green card icons with their #s under them, that one does not appear - but it let me make FP+s for all my days once I put it in.
So I think what they do with an unused ticket that is not part of a package (mine are all nonexpiring) is put it under who you direct it to, but it is not yet fully linked to me. Make sense to anyone else? Anyone else have this happen?