diff --git a/.github/instructions/cli.instructions.md b/.github/instructions/cli.instructions.md
new file mode 100644
index 0000000..2b858da
--- /dev/null
+++ b/.github/instructions/cli.instructions.md
@@ -0,0 +1,13 @@
+---
+applyTo: "cli/**"
+description: Instructions for developing and validating the UTRANS CLI
+---
+
+# UTRANS CLI Development Instructions
+
+- Use the existing Conda environment named `utrans-tools` for CLI development and validation.
+- Activate it before running Python, ArcPy, pytest, or CLI commands:
+
+```powershell
+conda activate utrans-tools
+```
\ No newline at end of file
diff --git a/cli/src/utrans/etl_mappers.py b/cli/src/utrans/etl_mappers.py
index c2a7567..4f2dbb0 100644
--- a/cli/src/utrans/etl_mappers.py
+++ b/cli/src/utrans/etl_mappers.py
@@ -164,11 +164,12 @@ def apply_mapper(feature_class: str, profile: CountyProfile, utrans_roads: str)
                 if resolved is not None:
                     row[target_index] = resolved
                 elif has_value(row[source_index]):
+                    row[target_index] = source_value
                     notes_index = indexes.get("UTRANS_NOTES")
                     if notes_index is not None:
                         row[notes_index] = (
-                            f"{row[notes_index] or ''}{target}: {row[source_index]}; "
-                        )
+                            f"{row[notes_index] or ''}{target}: {source_value}; "
+                        )[:200]
             for source, alias in parse_sources:
                 source_index = indexes.get(source.upper())
                 if source_index is None: