Yes.
For ANA flight tickets that were booked and purchased through Travel CUBE, or ANA flight tickets that were booked and purchased on the ANA website and then imported into Travel CUBE, you can check the following information on the "Past Reservation" screen even after boarding.
<Checkable Information>
Flight number
Boarding date and time
Boarding Section
Class
Please note that if you make a purchase, cancellation, change, or other procedure on the ANA website, it may not be reflected correctly on Travel CUBE. To reflect the latest information, please open the "Reservation List" screen on Travel CUBE after completing the procedure on the ANA website and before the boarding date.