Error with "Remove unused directives in file"

if I creata a simple console app see below:
And execute the "remove unused directives in file fix" it incorreclty removes the "using SCG = System.Collections.Generic"

This is anoying for projects I'm working on where the devs use the :: namespace alias qualifier.

Cheers,
Graeme.
n.b. I'm using build 1532

using System;
using SCG = System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication4
{
    class Program
    {
        static void Main(string[] args)
        {
            var list = new SCG::List<int>();            
        }
    }
}