Visual studio 2010 VS2013发布不会复制引用类库中的内容文件夹

我有以下文件夹结构：

Library <--[project ref]-- Web Project
--------                    -----------
DataFiles
EngineFiles
.cs files                   .cs files

关于为什么文件夹中没有包含文件而被复制过来，有什么想法吗

  <Target Name="DropWebSiteUI">
    <Message Text="Drop Web Site UI files" />

    <CreateItem Include="$(BinariesRoot)\%(ConfigurationToBuild.FlavorToBuild)\_PublishedWebsites\StackOverflow\**\*;">
      <Output ItemName="WebSiteUI" TaskParameter="Include" />
    </CreateItem>

    <CreateItem Include="$(BinariesRoot)\%(ConfigurationToBuild.FlavorToBuild)\en-US\*;">
      <Output ItemName="ResourceFile_StackOverflowUI" TaskParameter="Include" />
    </CreateItem>

    <Copy SourceFiles="@(WebSiteUI)" DestinationFiles="@(WebSiteUI-&gt;'$(DropLocation)\$(BuildNumber)\WebSiteUI\%(RecursiveDir)%(FileName)%(Extension)')" ContinueOnError="true" />

    <Copy SourceFiles="@(ResourceFile_StackOverflowUI)" DestinationFiles="@(ResourceFile_StackOverlowUI-&gt;'$(DropLocation)\$(BuildNumber)\WebSiteUI\bin\en-US\%(FileName)%(Extension)')" />
  </Target>