4 files changed, 30 insertions, 4 deletions

diff --git a/src/internal/WixInternal.TestSupport/XunitExtensions/WixAssert.cs b/src/internal/WixInternal.TestSupport/XunitExtensions/WixAssert.cs
index 66f831a1..083e34f5 100644
--- a/src/internal/WixInternal.TestSupport/XunitExtensions/WixAssert.cs
+++ b/src/internal/WixInternal.TestSupport/XunitExtensions/WixAssert.cs
@@ -4,6 +4,7 @@ namespace WixInternal.TestSupport
 {
     using System;
     using System.Collections.Generic;
+    using System.IO;
     using System.Linq;
     using System.Text;
     using System.Xml.Linq;
@@ -30,8 +31,8 @@ namespace WixInternal.TestSupport
 
         public static void CompareXml(XContainer xExpected, XContainer xActual)
         {
-            var expecteds = xExpected.Descendants().Select(x => $"{x.Name.LocalName}:{String.Join(",", x.Attributes().OrderBy(a => a.Name.LocalName).Select(a => $"{a.Name.LocalName}={a.Value}"))}");
-            var actuals = xActual.Descendants().Select(x => $"{x.Name.LocalName}:{String.Join(",", x.Attributes().OrderBy(a => a.Name.LocalName).Select(a => $"{a.Name.LocalName}={a.Value}"))}");
+            var expecteds = ComparableElements(xExpected);
+            var actuals = ComparableElements(xActual);
 
             CompareLineByLine(expecteds.OrderBy(s => s).ToArray(), actuals.OrderBy(s => s).ToArray());
         }
@@ -44,6 +45,22 @@ namespace WixInternal.TestSupport
             CompareXml(expectedDoc, actualDoc);
         }
 
+        private static IEnumerable<string> ComparableElements(XContainer container)
+        {
+            return container.Descendants().Select(x => $"{x.Name.LocalName}:{String.Join(",", x.Attributes().OrderBy(a => a.Name.LocalName).Select(a => $"{a.Name.LocalName}={ComparableAttribute(a)}"))}");
+        }
+
+        private static string ComparableAttribute(XAttribute attribute)
+        {
+            switch (attribute.Name.LocalName)
+            {
+                case "SourceFile":
+                    return "<SourceFile>";
+                default:
+                    return attribute.Value;
+            }
+        }
+
         /// <summary>
         /// Dynamically skips the test.
         /// Requires that the test was marked with a fact attribute derived from <see cref="WixInternal.TestSupport.XunitExtensions.SkippableFactAttribute" />
diff --git a/src/wix/WixToolset.Core.WindowsInstaller/Unbind/UnbindDatabaseCommand.cs b/src/wix/WixToolset.Core.WindowsInstaller/Unbind/UnbindDatabaseCommand.cs
index 9ad936e4..cfa53269 100644
--- a/src/wix/WixToolset.Core.WindowsInstaller/Unbind/UnbindDatabaseCommand.cs
+++ b/src/wix/WixToolset.Core.WindowsInstaller/Unbind/UnbindDatabaseCommand.cs
@@ -146,6 +146,7 @@ namespace WixToolset.Core.WindowsInstaller.Unbind
         {
             View validationView = null;
             string modularizationGuid = null;
+            string modularizationSuffix = null;
 
             try
             {
@@ -204,6 +205,11 @@ namespace WixToolset.Core.WindowsInstaller.Unbind
                                                 {
                                                     source = Path.Combine(this.ExportBasePath, tableName, row.GetPrimaryKey('.'));
 
+                                                    if (!String.IsNullOrEmpty(modularizationSuffix))
+                                                    {
+                                                        source += modularizationSuffix;
+                                                    }
+
                                                     Directory.CreateDirectory(Path.Combine(this.ExportBasePath, tableName));
 
                                                     using (var fs = this.FileSystem.OpenFile(null, source, FileMode.Create, FileAccess.Write, FileShare.None))
@@ -238,6 +244,8 @@ namespace WixToolset.Core.WindowsInstaller.Unbind
                                                     if (null == modularizationGuid)
                                                     {
                                                         var match = Modularization.Match(value);
+                                                        modularizationSuffix = match.Value;
+
                                                         if (match.Success)
                                                         {
                                                             modularizationGuid = String.Concat('{', match.Value.Substring(1).Replace('_', '-'), '}');
diff --git a/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/Expected.wxs b/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/Expected.wxs
index 4a89f56b..501daabb 100644
--- a/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/Expected.wxs
+++ b/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/Expected.wxs
@@ -1,6 +1,7 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
   <Module Codepage="65001" Id="MergeModule1" Language="1033" Version="1.0.0.0" InstallerVersion="200" Guid="{F844F0E3-8CB4-4A0F-973E-31C4F9338382}">
+    <Binary Id="Binary1" SourceFile="Expected.wxs" />
     <StandardDirectory Id="ProgramFilesFolder">
       <Directory Id="WixTestDir" ShortName="7bhhvaai" Name="WiX Toolset Test Directory">
         <Component Id="ModuleComponent1" Guid="{D86EC5A2-9576-4699-BDC3-00586FF72CBE}" Bitness="always32">
@@ -20,4 +21,4 @@
       </Component>
     </StandardDirectory>
   </Module>
-</Wix>
\ No newline at end of file
+</Wix>
diff --git a/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/MergeModule1.msm b/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/MergeModule1.msm
index a09cab20..227712a4 100644
--- a/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/MergeModule1.msm
+++ b/src/wix/test/WixToolsetTest.CoreIntegration/TestData/DecompileTargetDirMergeModule/MergeModule1.msm