United MileagePlus (Consolidated) - Weird display of MP award booking on JJ's website - problem?

I have made an award booking using my MP miles which involves a transatlantic journey with TP connecting with a domestic flight on JJ. The booking looks fine on ua.com. I phoned MP and got the TP/JJ record locator. When you check your reservation on the TP website, it takes you to checkmytrip.com; there, too, the whole itinerary looks fine. However, if I enter the record locator on JJ's website it does correctly list origin and ultimate destination on top, but the only flight listed is the first leg (an intra-European TP flight). Has anybody seen anything similar - is this a quirk of JJ's system, or is there a risk of a SHARES partner booking snafu? Because it's a domestic JJ flight, it's booked in Economy so there isn't the reassurance of a seat assignment.

Is the PNR you're looking at on the JJ site the JJ PNR or the TP one? If JJ has a separate PNR for their systems then they might just be showing you the generic one.

You can always call the JJ call center and confirm that they see the reservation.

Thank you, I just did. The Record Locator is indeed the same as with TAP, and it looks just fine and dandy in their system.