Directory.Build.targets для файлов проекта без целей в Visual Studio

Если в моем файле проекта нет целей, и у меня есть файл Directory.Build.targets (с соответствующими целями) в соответствующем каталоге, Visual Studio не может построить проект. Версия VS - 2019RC, но я не думаю, что это проблема конкретной версии.

Это ожидаемое поведение и почему?

ОБНОВЛЕНИЕ - полная структура проекта. В общем, это модифицированный проект из шаблона "Проект коннектора данных" из "Power Query SDK" - https://marketplace.visualstudio.com/items?itemName=Dakahn.PowerQuerySDK.

Имя проекта — PQExtensionTest. Он имеет типичную структуру папок - каталог решения PQExtensionTest, внутри файла PQExtensionTest.sln и каталог проекта PQExtensionTest с файлами PQExtensionTest.mroj и Directory.build.targets.

Файл PQExtensionTest.sln:

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 15
VisualStudioVersion = 15.0.28010.2046
MinimumVisualStudioVersion = 10.0.40219.1
Project("{4DF76451-A46A-4C0B-BE03-459FAAFA07E6}") = "PQExtensionTest", "PQExtensionTest\PQExtensionTest.mproj", "{6DEC2A2E-C380-4701-AA12-5052284223E4}"
EndProject
Global
    GlobalSection(SolutionConfigurationPlatforms) = preSolution
        Debug|x86 = Debug|x86
        Release|x86 = Release|x86
    EndGlobalSection
    GlobalSection(ProjectConfigurationPlatforms) = postSolution
        {6DEC2A2E-C380-4701-AA12-5052284223E4}.Debug|x86.ActiveCfg = Debug|x86
        {6DEC2A2E-C380-4701-AA12-5052284223E4}.Debug|x86.Build.0 = Debug|x86
        {6DEC2A2E-C380-4701-AA12-5052284223E4}.Release|x86.ActiveCfg = Release|x86
        {6DEC2A2E-C380-4701-AA12-5052284223E4}.Release|x86.Build.0 = Release|x86
    EndGlobalSection
    GlobalSection(SolutionProperties) = preSolution
        HideSolutionNode = FALSE
    EndGlobalSection
    GlobalSection(ExtensibilityGlobals) = postSolution
        SolutionGuid = {50EB6857-946A-4D05-B65C-B99E4D39BEDD}
    EndGlobalSection
EndGlobal

Файл PQExtensionTest.mroj:

<Project xmlns = "http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <ProjectGuid>{6dec2a2e-c380-4701-aa12-5052284223e4}</ProjectGuid>
  </PropertyGroup>
  <ItemGroup>
    <Compile Include = "PQExtensionTest.pq">
      <SubType>Code</SubType>
    </Compile>
    <Content Include = "PQExtensionTest.query.pq">
      <SubType>Code</SubType>
    </Content>
  </ItemGroup>
</Project>

Файл Directory.Build.targets:

<Project DefaultTargets = "BuildExtension" xmlns = "http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <Configuration Condition = " '$(Configuration)' == '' ">Debug</Configuration>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{a9cd1ca9-92e5-493d-8065-377910605c30}</ProjectGuid>
    <OutputType>Exe</OutputType>
    <RootNamespace>MyRootNamespace</RootNamespace>
    <AssemblyName>MyAssemblyName</AssemblyName>
    <EnableUnmanagedDebugging>False</EnableUnmanagedDebugging>
    <AllowNativeQuery>False</AllowNativeQuery>
    <AsAction>False</AsAction>
    <FastCombine>False</FastCombine>
    <ClearLog>False</ClearLog>
    <ShowEngineTraces>False</ShowEngineTraces>
    <ShowUserTraces>False</ShowUserTraces>
    <LegacyRedirects>False</LegacyRedirects>
    <SuppressRowErrors>False</SuppressRowErrors>
    <SuppressCellErrors>False</SuppressCellErrors>
    <MaxRows>1000</MaxRows>
    <ExtensionProject>Yes</ExtensionProject>
    <Name>PQExtensionTest</Name>
  </PropertyGroup>
  <PropertyGroup Condition = " '$(Configuration)' == 'Debug' ">
    <DebugSymbols>false</DebugSymbols>
    <!--Should be true, fix this when the debugger is implemented -->
    <OutputPath>bin\Debug\</OutputPath>
  </PropertyGroup>
  <PropertyGroup Condition = " '$(Configuration)' == 'Release' ">
    <DebugSymbols>false</DebugSymbols>
    <OutputPath>bin\Release\</OutputPath>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include = "mscorlib" />
    <Reference Include = "System" />
    <Reference Include = "System.Data" />
    <Reference Include = "System.Xml" />
  </ItemGroup>
 <Import Project = "$(MSBuildBinPath)\Microsoft.CSharp.targets" />
  <UsingTask TaskName = "BuildExtension" TaskFactory = "CodeTaskFactory" AssemblyFile = "$(MSBuildToolsPath)\Microsoft.Build.Tasks.v12.0.dll">
    <ParameterGroup>
      <InputDirectory ParameterType = "System.String" Required = "true" />
      <OutputFile ParameterType = "System.String" Required = "true" />
    </ParameterGroup>
    <Task>
      <Reference Include = "System.IO.Compression" />
      <Reference Include = "System.IO.Compression.FileSystem" />
      <Using Namespace = "System.Globalization" />
      <Using Namespace = "System.IO.Compression " />
      <Code Type = "Fragment" Language = "cs"><![CDATA[    
    using(FileStream fileStream = File.Create(OutputFile))
    using(ZipArchive archiveOut = new ZipArchive(fileStream, ZipArchiveMode.Create, false))
    {
        foreach(string fullPath in Directory.EnumerateFiles(InputDirectory))
        {
            string filename = Path.GetFileName(fullPath);

            archiveOut.CreateEntryFromFile(fullPath, filename, CompressionLevel.Optimal);
        }
    }
]]></Code>
    </Task>
  </UsingTask>
  <Target Name = "BuildExtension" DependsOnTargets = "ExtensionClean">
    <ItemGroup>
      <PQFiles Include = "@(Compile)" Condition = "'%(Extension)' == '.pq'" />
    </ItemGroup>
    <ItemGroup>
      <NonPQFiles Include = "@(Compile)" Condition = "'%(Extension)' != '.pq'" />
    </ItemGroup>
    <MakeDir Directories = "$(IntermediateOutputPath)" />
    <MakeDir Directories = "$(OutputPath)" />
    <Copy SourceFiles = "@(NonPQFiles)" DestinationFolder = "$(IntermediateOutputPath)" />
    <Copy SourceFiles = "@(PQFiles)" DestinationFiles = "@(PQFiles->'$(IntermediateOutputPath)%(RecursiveDir)%(FileName).m')" />
    <BuildExtension InputDirectory = "$(IntermediateOutputPath)" OutputFile = "$(OutputPath)\$(ProjectName).mez" />
  </Target>
  <Target Name = "ExtensionClean">
    <!-- Remove obj folder -->
    <RemoveDir Directories = "$(BaseIntermediateOutputPath)" />
    <!-- Remove bin folder -->
    <RemoveDir Directories = "$(OutputPath)" />
<Message Text = "MyM: $(aProperty)" />
   </Target>