When sending your VTO Ultimate booking to TRIPS, you must always select all the sectors you want to appear in your TRIPS itinerary. Only the selected secorts will display.
For example: if your booking contains five sectors and you send your booking to TRIPS and select all, all five sectors will be included when you import. If you subsequently export to TRIPS and only check 3 sectors, the two sectors that you did not select will be removed from your TRIPS itinerary.