TodaysPlan Distance instead of duration


I switched from Trainingpeaks to TodaysPlan a few weeks ago and train using a running workout plan. The workouts are based on time intervals and are transferred from TodaysPlan to Zwift. However, it is now the case that I no longer get the time to be completed but the distance to be completed displayed for the running sessions on Zwift. So an interval is not finished when I have run the set time, but when I have run the calculated distance.

Does anyone know why this is?

Kind regards