Originally Posted by
MysteryTour
Pay attention when entering your info. It seems this info goes into the same section of your account as your Known Traveler number and may erase that from your account. I noticed that it appeared to do that when I entered mine. Now, we are traveling today and my wife’s TTN is missing from her account. She only noticed when she didn’t get TSA Precheck today.
Mine is still there. What could have happened to your wife's reservation was somehow when reservation was made, TTN number was not auto populated. Which happened to me a couple of times.