diff --git a/test/EndToEnd/tests/SyncPackageTest.ps1 b/test/EndToEnd/tests/SyncPackageTest.ps1
deleted file mode 100644
index 4341b3795f5..00000000000
--- a/test/EndToEnd/tests/SyncPackageTest.ps1
+++ /dev/null
@@ -1,100 +0,0 @@
-
-# Test sync-package basic scenario - moving up version
-function Test-SyncPackagesInSolutionUp {
-    param(
-        $context
-    )
-
-    # Arrange
-    $p1 = New-ConsoleApplication
-    $p2 = New-ClassLibrary
-    
-    # Act
-    $p1 | Install-Package A -Version 1.0.0 -Source $context.RepositoryPath
-    $p2 | Install-Package A -Version 2.0.0 -Source $context.RepositoryPath
-    
-    Assert-Package $p1 A 1.0.0
-    Assert-Package $p1 B 1.0.0
-    Assert-Package $p2 A 2.0.0
-    Assert-Package $p2 B 2.0.0
-
-    Sync-Package -ProjectName $p2.Name -Id A -Source $context.RepositoryPath
-
-    # Assert
-    Assert-Package $p1 A 2.0.0
-    Assert-Package $p1 B 2.0.0
-    Assert-Package $p2 A 2.0.0
-    Assert-Package $p2 B 2.0.0
-    Assert-Null (Get-ProjectPackage $p1 A 1.0.0)
-    Assert-Null (Get-ProjectPackage $p1 B 1.0.0)
-}
-
-# Test sync-package basic scenario - moving down version
-function Test-SyncPackagesInSolutionDown {
-    param(
-        $context
-    )
-
-    # Arrange
-    $p1 = New-ConsoleApplication
-    $p2 = New-ClassLibrary
-    
-    # Act
-    $p1 | Install-Package A -Version 1.0.0 -Source $context.RepositoryPath
-    $p2 | Install-Package A -Version 2.0.0 -Source $context.RepositoryPath
-    
-    Assert-Package $p1 A 1.0.0
-    Assert-Package $p1 B 1.0.0
-    Assert-Package $p2 A 2.0.0
-    Assert-Package $p2 B 2.0.0
-
-    Sync-Package -ProjectName $p1.Name -Id A -Source $context.RepositoryPath
-
-    # Assert
-    Assert-Package $p1 A 1.0.0
-    Assert-Package $p1 B 1.0.0
-    Assert-Package $p2 A 1.0.0
-    Assert-Package $p2 B 2.0.0
-    Assert-Null (Get-ProjectPackage $p1 A 2.0.0)
-}
-
-# Test sync-package basic scenario - plurality of project
-function Test-SyncPackagesInSolutionPlural {
-    param(
-        $context
-    )
-
-    # Arrange
-    $p1 = New-ConsoleApplication
-    $p2 = New-ClassLibrary
-    $p3 = New-ClassLibrary
-    $p4 = New-ClassLibrary
-    $p5 = New-ClassLibrary
-    
-    # Act
-    $p1 | Install-Package A -Version 1.0.0 -Source $context.RepositoryPath
-    $p2 | Install-Package A -Version 2.0.0 -Source $context.RepositoryPath
-    $p3 | Install-Package A -Version 3.0.0 -Source $context.RepositoryPath
-    $p4 | Install-Package A -Version 4.0.0 -Source $context.RepositoryPath
-    $p5 | Install-Package A -Version 5.0.0 -Source $context.RepositoryPath
-    
-    Assert-Package $p1 A 1.0.0
-    Assert-Package $p2 A 2.0.0
-    Assert-Package $p3 A 3.0.0
-    Assert-Package $p4 A 4.0.0
-    Assert-Package $p5 A 5.0.0
-
-    Sync-Package -ProjectName $p3.Name -Id A -Source $context.RepositoryPath
-
-    # Assert
-    Assert-Package $p1 A 3.0.0
-    Assert-Package $p2 A 3.0.0
-    Assert-Package $p3 A 3.0.0
-    Assert-Package $p4 A 3.0.0
-    Assert-Package $p5 A 3.0.0
-
-    Assert-Null (Get-ProjectPackage $p1 A 1.0.0)
-    Assert-Null (Get-ProjectPackage $p2 A 2.0.0)
-    Assert-Null (Get-ProjectPackage $p4 A 4.0.0)
-    Assert-Null (Get-ProjectPackage $p5 A 5.0.0)
-}
diff --git a/test/NuGet.Tests.Apex/NuGet.Tests.Apex/NuGetEndToEndTests/SyncPackageTestCase.cs b/test/NuGet.Tests.Apex/NuGet.Tests.Apex/NuGetEndToEndTests/SyncPackageTestCase.cs
new file mode 100644
index 00000000000..15f77803b4d
--- /dev/null
+++ b/test/NuGet.Tests.Apex/NuGet.Tests.Apex/NuGetEndToEndTests/SyncPackageTestCase.cs
@@ -0,0 +1,170 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Threading.Tasks;
+using Microsoft.Test.Apex.VisualStudio.Solution;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace NuGet.Tests.Apex
+{
+    [TestClass]
+    public class SyncPackageTestCase : SharedVisualStudioHostTestClass
+    {
+        // Migrated from Test-SyncPackagesInSolutionUp in SyncPackageTest.ps1
+        // Syncs package A from the project with the higher version to all other projects.
+        [TestMethod]
+        [Timeout(DefaultTimeout)]
+        public async Task SyncPackageFromPMC_UpVersion_SyncsAllProjectsAsync()
+        {
+            using var testContext = new ApexTestContext(VisualStudio, ProjectTemplate.ConsoleApplication, Logger);
+
+            var packageName = "A";
+            var packageVersion1 = "1.0.0";
+            var packageVersion2 = "2.0.0";
+            var dependencyName = "B";
+            var dependencyVersion1 = "1.0.0";
+            var dependencyVersion2 = "2.0.0";
+
+            await CommonUtility.CreateDependenciesPackageInSourceAsync(testContext.PackageSource, packageName, packageVersion1, dependencyName, dependencyVersion1);
+            await CommonUtility.CreateDependenciesPackageInSourceAsync(testContext.PackageSource, packageName, packageVersion2, dependencyName, dependencyVersion2);
+
+            var project2 = testContext.SolutionService.AddProject(ProjectLanguage.CSharp, ProjectTemplate.ClassLibrary, CommonUtility.DefaultTargetFramework, "TestProject2");
+            project2.Build();
+            testContext.SolutionService.Save();
+
+            var nugetConsole = GetConsole(testContext.Project);
+
+            // Install A 1.0.0 into project1 and A 2.0.0 into project2
+            nugetConsole.Execute($"Install-Package {packageName} -ProjectName {testContext.Project.Name} -Version {packageVersion1} -Source {testContext.PackageSource}");
+            nugetConsole.Execute($"Install-Package {packageName} -ProjectName {project2.Name} -Version {packageVersion2} -Source {testContext.PackageSource}");
+
+            // Pre-conditions
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, packageName, packageVersion1, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, dependencyName, dependencyVersion1, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, packageName, packageVersion2, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, dependencyName, dependencyVersion2, Logger);
+
+            // Sync from project2 (which has A 2.0.0)
+            nugetConsole.Execute($"Sync-Package -ProjectName {project2.Name} -Id {packageName} -Source {testContext.PackageSource}");
+
+            // Assert: project1 should now have A 2.0.0 and B 2.0.0
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, packageName, packageVersion2, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, dependencyName, dependencyVersion2, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, packageName, packageVersion2, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, dependencyName, dependencyVersion2, Logger);
+
+            // Old versions should no longer be installed in project1
+            CommonUtility.AssertPackageNotInPackagesConfig(VisualStudio, testContext.Project, packageName, packageVersion1, Logger);
+            CommonUtility.AssertPackageNotInPackagesConfig(VisualStudio, testContext.Project, dependencyName, dependencyVersion1, Logger);
+        }
+
+        // Migrated from Test-SyncPackagesInSolutionDown in SyncPackageTest.ps1
+        // Syncs package A from the project with the lower version to all other projects.
+        [TestMethod]
+        [Timeout(DefaultTimeout)]
+        public async Task SyncPackageFromPMC_DownVersion_SyncsAllProjectsAsync()
+        {
+            using var testContext = new ApexTestContext(VisualStudio, ProjectTemplate.ConsoleApplication, Logger);
+
+            var packageName = "A";
+            var packageVersion1 = "1.0.0";
+            var packageVersion2 = "2.0.0";
+            var dependencyName = "B";
+            var dependencyVersion1 = "1.0.0";
+            var dependencyVersion2 = "2.0.0";
+
+            await CommonUtility.CreateDependenciesPackageInSourceAsync(testContext.PackageSource, packageName, packageVersion1, dependencyName, dependencyVersion1);
+            await CommonUtility.CreateDependenciesPackageInSourceAsync(testContext.PackageSource, packageName, packageVersion2, dependencyName, dependencyVersion2);
+
+            var project2 = testContext.SolutionService.AddProject(ProjectLanguage.CSharp, ProjectTemplate.ClassLibrary, CommonUtility.DefaultTargetFramework, "TestProject2");
+            project2.Build();
+            testContext.SolutionService.Save();
+
+            var nugetConsole = GetConsole(testContext.Project);
+
+            // Install A 1.0.0 into project1 and A 2.0.0 into project2
+            nugetConsole.Execute($"Install-Package {packageName} -ProjectName {testContext.Project.Name} -Version {packageVersion1} -Source {testContext.PackageSource}");
+            nugetConsole.Execute($"Install-Package {packageName} -ProjectName {project2.Name} -Version {packageVersion2} -Source {testContext.PackageSource}");
+
+            // Pre-conditions
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, packageName, packageVersion1, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, dependencyName, dependencyVersion1, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, packageName, packageVersion2, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, dependencyName, dependencyVersion2, Logger);
+
+            // Sync from project1 (which has A 1.0.0)
+            nugetConsole.Execute($"Sync-Package -ProjectName {testContext.Project.Name} -Id {packageName} -Source {testContext.PackageSource}");
+
+            // Assert: project1 stays at A 1.0.0 / B 1.0.0
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, packageName, packageVersion1, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, testContext.Project, dependencyName, dependencyVersion1, Logger);
+            // project2 should now have A 1.0.0, but B stays at 2.0.0 (dependency is not downgraded)
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, packageName, packageVersion1, Logger);
+            CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project2, dependencyName, dependencyVersion2, Logger);
+
+            // Old version of A should no longer be installed in project2
+            CommonUtility.AssertPackageNotInPackagesConfig(VisualStudio, project2, packageName, packageVersion2, Logger);
+        }
+
+        // Migrated from Test-SyncPackagesInSolutionPlural in SyncPackageTest.ps1
+        // Syncs package A from a middle version across five projects.
+        [TestMethod]
+        [Timeout(DefaultTimeout)]
+        public async Task SyncPackageFromPMC_MultipleProjects_SyncsAllProjectsAsync()
+        {
+            using var testContext = new ApexTestContext(VisualStudio, ProjectTemplate.ConsoleApplication, Logger);
+
+            var packageName = "A";
+            var dependencyName = "B";
+
+            // Create packages A v1-5, each depending on B v1-5
+            for (int i = 1; i <= 5; i++)
+            {
+                await CommonUtility.CreateDependenciesPackageInSourceAsync(
+                    testContext.PackageSource, packageName, $"{i}.0.0", dependencyName, $"{i}.0.0");
+            }
+
+            // Create 4 additional projects (project1 is testContext.Project)
+            var project2 = testContext.SolutionService.AddProject(ProjectLanguage.CSharp, ProjectTemplate.ClassLibrary, CommonUtility.DefaultTargetFramework, "TestProject2");
+            project2.Build();
+            var project3 = testContext.SolutionService.AddProject(ProjectLanguage.CSharp, ProjectTemplate.ClassLibrary, CommonUtility.DefaultTargetFramework, "TestProject3");
+            project3.Build();
+            var project4 = testContext.SolutionService.AddProject(ProjectLanguage.CSharp, ProjectTemplate.ClassLibrary, CommonUtility.DefaultTargetFramework, "TestProject4");
+            project4.Build();
+            var project5 = testContext.SolutionService.AddProject(ProjectLanguage.CSharp, ProjectTemplate.ClassLibrary, CommonUtility.DefaultTargetFramework, "TestProject5");
+            project5.Build();
+            testContext.SolutionService.Save();
+
+            var nugetConsole = GetConsole(testContext.Project);
+
+            // Install different versions of A into each project
+            var projects = new[] { testContext.Project, project2, project3, project4, project5 };
+            for (int i = 0; i < projects.Length; i++)
+            {
+                var version = $"{i + 1}.0.0";
+                nugetConsole.Execute($"Install-Package {packageName} -ProjectName {projects[i].Name} -Version {version} -Source {testContext.PackageSource}");
+            }
+
+            // Pre-conditions: each project has the expected version of A
+            for (int i = 0; i < projects.Length; i++)
+            {
+                CommonUtility.AssertPackageInPackagesConfig(VisualStudio, projects[i], packageName, $"{i + 1}.0.0", Logger);
+            }
+
+            // Sync from project3 (which has A 3.0.0)
+            nugetConsole.Execute($"Sync-Package -ProjectName {project3.Name} -Id {packageName} -Source {testContext.PackageSource}");
+
+            // Assert: all projects should now have A 3.0.0
+            foreach (var project in projects)
+            {
+                CommonUtility.AssertPackageInPackagesConfig(VisualStudio, project, packageName, "3.0.0", Logger);
+            }
+
+            // Old versions of A should no longer be installed
+            CommonUtility.AssertPackageNotInPackagesConfig(VisualStudio, testContext.Project, packageName, "1.0.0", Logger);
+            CommonUtility.AssertPackageNotInPackagesConfig(VisualStudio, project2, packageName, "2.0.0", Logger);
+            CommonUtility.AssertPackageNotInPackagesConfig(VisualStudio, project4, packageName, "4.0.0", Logger);
+            CommonUtility.AssertPackageNotInPackagesConfig(VisualStudio, project5, packageName, "5.0.0", Logger);
+        }
+    }
+}