Interesting question actually - the Qatar Airways receipt email I received has a ticket number that seems to match up with JetBlue's usual ticketing scheme (13 digit number). When I check JetBlue's website, it also says 'Ticketed' under my reservation. However, when I scroll down to my name (see photo), it has a line that says "eTicket: Add TrueBlue or frequent flyer number" so I'm not sure JetBlue themselves has a record of that ticket number for me. I'm not sure how that line is supposed to look on a fully ticketed confirmation screen. As you can see, I could choose my seat, but Qatar also didn't pass on basic information like DOB or gender.