Digital Tacho 4.0

Hello, For trucks that are newly registered from 15.6.2019, the Digitaltacho 4.0 has to be installed. For this you definitely need a new version of the driver card. But what about the company card? Concrete case: My new truck is finished on 3.5., but then goes to the construction manufacturer. There it will probably stand until 20.6.. Mercedes has informed us that the speedo 4.0 will be installed. But now I will pick up the truck on 3 May and build it up. Mercedes says nothing, BAG only led me to the district government, they knew nothing, but they informed themselves on my request, but found only information for driver cards and workshop cards (both have to be new). Now, of course, I am worried that I will not be able to register with the old company card when collecting the truck. Who knows what?