Opentransportdata.swiss

Actual Data - Zürich missing line 72

Dear all,
I’m working with the Actual Data, in particular for the city of Zürich.
I noticed that there are no data of the bus line 72.
You can easily see this looking for its bus stops (like “Zürich, Jugendherberge”) and observing that there are only data of the other lines.
Instead, the vbz open data (data.stadt-zuerich.ch/dataset/vbz-fahrzeiten-ogd) contain the data of this line but in another format.
Why are not data of this line? are there any other missing data in Actual Data?

thank you in advance.