Hi Vladimir,
Great finding on the changes on network type transitions!
In the v1.1 model, we have removed the Medium Converter equipment, and the network type transition will be reflected by the connector types contained within the device.
Let me show you an example in the sample data (Early Preview). Here we have a fiber-to-coax transition point, which we can use any device based on your engineering guideline and network architecture. In this case, I am using a Hub Terminator which contains a Patch Panel Chassis (for internal connection), a fiber connector group (incoming junctions from the fiber cable), and 3 coax connector groups (downstream junctions to the coax cables).
This design will give us flexibility in modeling complex equipment and network conversion. You can place different types of chassis to model the original "medium converter" behavior, using splitters, patch panels, amplifiers, and other equipment to show more detail about what is going on within the conversion point.
Hopefully, this information is helpful to you!