Wrong patch file generated when the attribute has xml namespace

[chucklu]

I have the following source file and target file
1.source file

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <runtime>
    <assemblyBinding>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

2.target file

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31BF3856AD364E35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.4.0" newVersion="5.6.4.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

3.when I generated the patch file,I got this

<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1" xdt:Transform="SetAttributes(xmlns)">
      <dependentAssembly>
        <assemblyIdentity name="Microsoft.Data.Edm" publicKeyToken="31BF3856AD364E35" xdt:Transform="SetAttributes(name,publicKeyToken)" />
        <bindingRedirect oldVersion="0.0.0.0-5.6.4.0" newVersion="5.6.4.0" xdt:Transform="Replace" xmlns="urn:schemas-microsoft-com:asm.v1" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

4.After applying the patch to source file,I got nothing. The base.xml keep the same as before.