Never mind. I found your previous answer to this question:
nivshahFounder
Generally, the system will link up players who debut after they debut. This happened correctly for Brandon Williamson. Before they debut, they won’t show the proper green checkmark and if they are hitters, will show a red X even though they are playing. Hitters will even be auto-benched if you have that setting turned on, even though they are playing. So that’s why its helpful to get info on debuts before the debuts happen. After the debuts happen, the system works mostly fine on its own.