We are aware of an issue that if you load a STAR but do not select an approach/landing runway if you later select the runway - The STAR transition to that selected runway may not populate.
Until a fix has been implemented, there is a temporary workaround.
1. Select an alternative STAR (Insert)
2. Select correct STAR with Arrival Runway and check transition (via) is correct.
1. After selecting the landing runway, pick a different (via) transition, and insert.
2. Select the correct transition (via) and check all waypoints are loaded.