import S.A

object S {
  val A = 0
  val B = 0
  val C = 0
}

object X {

  val n = A

  def f = {
    import S.A
    import S.B
    import S.C

    A+B
  }
}

organizing imports results in

import S.A

object S {
  val A = 0
  val B = 0
  val C = 0
}

object X {

  val n = A

  def f = {
    import S.A
    import S.B

    A+B
  }
}

it misses that the import of A inside of f can be removed