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deleydFlag for United States of America

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Is ConvertAll necessary?

I have a List<A> listA a list of objects of type A. I want to make a new list. Is there any difference between the following:
given: List<A> listA
var List<A> newListA = new List<A>(listA);
var List<A> newListA = new List<A>(listA.ConvertAll((x) => (A)x));

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I'm trying to figure out why some old code has this .ConvertAll in it and if it's necessary.
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it_saige
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There is no difference between the two as presented.  Proof of concept - 
using System;
using System.Collections.Generic;
using System.Linq;

namespace EE_Q29160843
{
	class Program
	{
		static void Main(string[] args)
		{
			var initial = (from i in Enumerable.Range(0, 20) select new A { Index = i, Name = $"Name{i}" }).ToList();
			var copied = new List<A>(initial);
			var converted = new List<A>(initial.ConvertAll(x => (A)x));
			Console.WriteLine($"Sequence copied Equals converted? {copied.SequenceEqual(converted)}");
			Console.ReadLine();
		}
	}

	class A
	{
		public int Index { get; set; }
		public string Name { get; set; }

		public override string ToString()
		{
			return $"{{ Index: {Index}, Name: {Name} }}";
		}
	}
}

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Results in the following output -User generated image-saige-
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Eduard Ghergu
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