From 007694824469cb416a19951e93dc39527938ea29 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 10 Apr 2026 16:13:44 +0000
Subject: [PATCH 1/2] Initial plan


From cd51b5775e19bd58f5789563e3aadda9857071ac Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 10 Apr 2026 16:18:52 +0000
Subject: [PATCH 2/2] Enforce case-insensitive replacement in
 TfsNodeStructureTool and add test

Agent-Logs-Url: https://github.com/nkdAgility/azure-devops-migration-tools/sessions/fdf18f43-12a5-4009-a641-35a9a4e7ba08

Co-authored-by: MrHinsh <5205575+MrHinsh@users.noreply.github.com>
---
 .../Tools/TfsNodeStructureTests.cs            | 32 +++++++++++++++++++
 .../Tools/TfsNodeStructureTool.cs             |  4 +--
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/src/MigrationTools.Clients.TfsObjectModel.Tests/Tools/TfsNodeStructureTests.cs b/src/MigrationTools.Clients.TfsObjectModel.Tests/Tools/TfsNodeStructureTests.cs
index 53534ba9c..3f289430e 100644
--- a/src/MigrationTools.Clients.TfsObjectModel.Tests/Tools/TfsNodeStructureTests.cs
+++ b/src/MigrationTools.Clients.TfsObjectModel.Tests/Tools/TfsNodeStructureTests.cs
@@ -44,6 +44,38 @@ public void GetTfsNodeStructureTool_WithDifferentAreaPath()
 
         }
 
+        [TestMethod(), TestCategory("L0")]
+        public void GetNewNodeName_WithCaseDifferenceInSourcePath_AppliesMappingConsistently()
+        {
+            var options = new TfsNodeStructureToolOptions();
+            options.Enabled = true;
+            options.Areas = new NodeOptions()
+            {
+                Mappings = [
+                    new() { Match = @"^SourceProject\\PUL", Replacement = "TargetProject\\test\\PUL" }
+                ]
+            };
+            var nodeStructure = GetTfsNodeStructureTool(options);
+
+            nodeStructure.ApplySettings(new TfsNodeStructureToolSettings
+            {
+                SourceProjectName = "SourceProject",
+                TargetProjectName = "TargetProject",
+                FoundNodes = new Dictionary<string, bool>
+                {
+                    { @"TargetProject\Area\test\PUL", true }
+                }
+            });
+
+            // Source path uses different casing than the Match pattern — must still apply replacement
+            const string sourceNodeName = @"sourceproject\pul";
+            const TfsNodeStructureType nodeStructureType = TfsNodeStructureType.Area;
+
+            var newNodeName = nodeStructure.GetNewNodeName(sourceNodeName, nodeStructureType);
+
+            Assert.AreEqual(@"TargetProject\test\PUL", newNodeName);
+        }
+
         [TestMethod, TestCategory("L0")]
         public void TestFixAreaPath_WhenNoAreaPathOrIterationPath_DoesntChangeQuery()
         {
diff --git a/src/MigrationTools.Clients.TfsObjectModel/Tools/TfsNodeStructureTool.cs b/src/MigrationTools.Clients.TfsObjectModel/Tools/TfsNodeStructureTool.cs
index 569278044..6c4f8f43a 100644
--- a/src/MigrationTools.Clients.TfsObjectModel/Tools/TfsNodeStructureTool.cs
+++ b/src/MigrationTools.Clients.TfsObjectModel/Tools/TfsNodeStructureTool.cs
@@ -114,7 +114,7 @@ public string GetNewNodeName(string sourceNodePath, TfsNodeStructureType nodeStr
                     if (Regex.IsMatch(sourceNodePath, mapper.Match, RegexOptions.IgnoreCase))
                     {
                         Log.LogDebug("NodeStructureEnricher.GetNewNodeName::Mappers::{key}::Match", mapper.Match);
-                        string replacement = Regex.Replace(sourceNodePath, mapper.Match, mapper.Replacement);
+                        string replacement = Regex.Replace(sourceNodePath, mapper.Match, mapper.Replacement, RegexOptions.IgnoreCase);
                         Log.LogDebug("NodeStructureEnricher.GetNewNodeName::Mappers::{key}::replaceWith({replace})", mapper.Match, replacement);
                         return replacement;
                     }
@@ -130,7 +130,7 @@ public string GetNewNodeName(string sourceNodePath, TfsNodeStructureType nodeStr
                 throw new NodePathNotAnchoredException($"This path is not anchored in the source project name: {sourceNodePath}");
             }
 
-            return Regex.Replace(sourceNodePath, lastResortRule.Key, lastResortRule.Value);
+            return Regex.Replace(sourceNodePath, lastResortRule.Key, lastResortRule.Value, RegexOptions.IgnoreCase);
         }
 
         private KeyValuePair<string, string> GetLastResortRemappingRule()