Init properties sometimes are not serialized (not consistent with readonly properties)

public class B

 {

  public int[] Data { get; private set; }

  public B(int[] data2)

  {

    Data = data2.ToArray();

  }

}

public class A

 {

  public int[] Data { get; }

  public A(int[] data2)

  {

    Data = data2.ToArray();

  }

}

B b = new B(new[] { 1, 20 });

A a = new A(new[] { 1, 20 });