Scala：使用Trait指针将{Case}复制到另一个Case

Question

这个问题与this类似，只是两个案例类实例都需要通过引用它们的基本特征来访问。这样做的原因是多个案例类将扩展特征，并且直到运行时才会知道确切的类型：

sealed trait baseData {
  def weight: Int
  def priority: Int
} 

sealed trait moreData {
  def weight: Int
  def priority: Int
  def t: String
  def id: String
} 

case class data1(override val weight: Int, override val priority: Int) extends baseData 
case class moreData1 (override val weight:Int, override val priority: Int, override val t: String, override val id: String)extends moreData

val from: baseData = data1(1,2)
val to: moreData =  moreData1(3,4,"a","b")

如何编写具有以下签名的函数，将from复制到to？

def copyOver[A <:baseData, B <:moreData](from: A, to: B)

我确信这对Shapeless是可行的，但我遇到了麻烦，因为我很陌生。