Arduino Engineering Kit - Obsolete Methods and Properties

Hello!

I am trying to follow the tutorial that was given with the Arduino Engineering Kit V.1 and have found out that some methods have become obsolete for the motor carrier and some of its peripherals. The first of these issues comes with the "addon(arduinoObject, 'library')" method when trying to make a carrier object with the Arduino board. It says that the add-on was not uploaded, that I have to clear and recreate the arduino object. The library is located within my system under the correct folders. I have done research and found out that there is a separate method to make this connection with the carrier, "mkrMotorCarrier(arduinoObject)." Another issue is with properties being called with a different name such as "DutyCycle" being changed "Speed," which is ok but this change has to be done project-wide. The latest set of issues comes with the "setSpeed()" method found under Task3 of the Drawing Robot Project, more specifically found under the function "moveToCounts." This method is not defined anymore and is the roadblock keeping me from continuing on with the project.

My first question, are there any updated documents, tutorials, and code to resolve these issues? I have a feeling that these issues will persist in the other two projects.

Second, was I correct in using the method "mkrMotorCarrier()" to make the connection to the motor carrier or should I try to use "addon()"?