diff --git a/src/Microsoft.DotNet.Wpf/ApiCompat/Baselines/PresentationBuildTasks-Net48.baseline.txt b/src/Microsoft.DotNet.Wpf/ApiCompat/Baselines/PresentationBuildTasks-Net48.baseline.txt
index 1f116a8e11d..ae81db9e325 100644
--- a/src/Microsoft.DotNet.Wpf/ApiCompat/Baselines/PresentationBuildTasks-Net48.baseline.txt
+++ b/src/Microsoft.DotNet.Wpf/ApiCompat/Baselines/PresentationBuildTasks-Net48.baseline.txt
@@ -1,3 +1,13 @@
Compat issues with assembly PresentationBuildTasks:
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.CompileTypeName.get()' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.CompileTypeName.set(System.String)' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.GeneratedCodeFiles.get()' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.GeneratedCodeFiles.set(Microsoft.Build.Framework.ITaskItem[])' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.MSBuildBinPath.get()' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.MSBuildBinPath.set(System.String)' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.ReferencePath.get()' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.ReferencePath.set(Microsoft.Build.Framework.ITaskItem[])' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.ReferencePathTypeName.get()' does not exist in the implementation but it does exist in the contract.
+MembersMustExist : Member 'Microsoft.Build.Tasks.Windows.GenerateTemporaryTargetAssembly.ReferencePathTypeName.set(System.String)' does not exist in the implementation but it does exist in the contract.
TypesMustExist : Type 'Microsoft.Build.Tasks.Windows.GetWinFXPath' does not exist in the implementation but it does exist in the contract.
-Total Issues: 1
+Total Issues: 11
diff --git a/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/Microsoft.WinFx.targets b/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/Microsoft.WinFx.targets
index 5496449671b..e1a7f495417 100644
--- a/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/Microsoft.WinFx.targets
+++ b/src/Microsoft.DotNet.Wpf/src/PresentationBuildTasks/Microsoft.WinFx.targets
@@ -20,6 +20,8 @@
+
+
@@ -380,6 +382,8 @@
+ CreateTemporaryTargetAssemblyProject;
+ RestoreTemporaryTargetAssemblyProject;
GenerateTemporaryTargetAssembly;
MarkupCompilePass2;
AfterMarkupCompilePass2;
@@ -400,6 +404,57 @@
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